UNIVERSITY OF IBADAN LIBRARY UNIVERSITY OF IBADAN THIS THESIS SUBMmED BY DI'.•.. 0 i 0.. lJ..ABO.S.I . WAS ACCEPTED IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN THE FACULTY OF EDUCATION OF THIS UNIVERSITY THE EFFECTIVE DATE OF THE AWARD IS .............. ~, ..}.:o.y.~ .J.t.~.r•..J~~(i . 30... ,.,:v.•..•.. l.~ 7 .a~.~_. I -.-.- DATE I-- SECRETARY POSTGRADUA TE SCHOOL UNIVERSITY OF IBADAN LIBRARY :r 11--}o:n,A-f'1---1J'mV--E-l-l~S!TY l.reA'" RY - ';'-'',- 8 8 - 0:. ---------------f 1 . -- 1HMV 14-6'1 • ES A2~ UNIVERSITY OF IBADAN LIBRARY - ii - DEDICATION· It is with deep LOVE and AFFECTION that I dedicate this work to: ANTHONIA IHUOMA CHINWE OLUCHI UNIVERSITY OF IBADAN LIBRARY iii ABSTRACT The present study investigated the relative effective- ness of modelling and shaping on the English language achieve- ment of deaf students. The study also investigated the possible effect of modelling and shaping on the subjects attitudes, and self-concept during ~nglish language sessions. The sample was a natural cluster of 45 form four secondary school Nigerian deaf students drawn from a secondary school for the deaf in Ibadan. A J x J factorial design was adoptedo Four instruments namely a Special ~nglish language achievement test, an attitude scale, and a self-concept scale were used for the study. The subjects were divided randomly into three groups - the modelling, shaping and control groups. Each group comprised of five students of high, live students of average, and five students of low achievement levels. The three groups were pre- and post-tested. The data obtained were analysed by the analysis of covariance and t-test, using the pre-test scores as the covariate and post-test scores as criterion. It was found that both modelling and Shaping programmes significantly improved the EngliSh language achievement of the UNIVERSITY OF IBADAN LIBRARY iv deaf subjects (F=2J.87, df=2/J6, P Z.Ol). When the modelling group was compared wi th the control ,.groupwith the help of t-test, the modelling group was superior (t=).lJ, df=28, P .(..001). The shaping group was also found to be superior to the control group (t=2.88, df=28, P ~ 05). But there was no significant difference between the modelling and shaping pro- grammes i~ improving the English language of the deaf when the two procedures were compared, although the modelling group had superior adjusted ¥-mean score. The average achievement level subjects who used the modelling programme were however superior to their shaping counterparts (t=6.J, df=8, P~.OOl). The treatment prpgrammes also improved the attitude of the subjects during the study, (F=4.7J, df=2/J6, P <'.05). Although there was no significant difference between the effect of modelling and shaping programmes on the subjects attitude both collectively and at various achievement levels, the mOdelling high achievers were superior to the shaping high achievers (t=2.J1, df=8, P ~.05). When the mOdelling group was compared with the control group, the mOdelling group was superior (b::J.67, df=28, P ~001). The shaping group was also o found to be superior to the control group (t=3.59, df=28, P (..001)0 HoJelling and shaping strategie s were found to have signi- ficantly influenced the self-concept of the subjects UNIVERSITY OF IBADAN LIBRARY - v - (F=7.52, df=2/36, P Further analYHis showed that the modelling and shaping programmes influenced the self- concept of the subjects equally. But the mOdelling group was superior to the control (t=2.08, df=8, P <. .05). The shaping group was also superior to the control group (t=Z~08,df=8, PZ·05). Apart from the modelling low achievers who showed superiority over the shaping low achievers (t=2.96, df=8, P Z .05), there was no significant difference between the various modelling achievement levels and their shaping counter- parts in self-concept. These findings have important i;nplications for the reme- diation of deficiencies in underachievement and poor achieve- ment motivation. UNIVERSITY OF IBADAN LIBRARY vi ACKNOWLeDGEMENTS It is with tears of joy and happiness that I express my hearty and sincere gratitude to my supervisor, Professor J.O. Akinboye for the way in which he energetically but yet dili- gently, sincerely and genuinely attended to this thesis from its conception to completion. Professor Akinboye made himself available for discussion on this work during the day and night, in his office, home, play ground, corridor, just name it. He was a motivator, a model and a challellger. I must particularly thank him for cominU to my rescue when my academic moral was at the minimal level. I am wholly indebted to Professor Akinboye for the style with which he introduced me to behavioural psychology. Professor Akinboye has not only introduced me to psychology but has al so taught me what it me ans to be genuine, sincere and straight-forward. Special thanks are due to Professor C.G.N. Bakare - Head of department, a wonderful and open-minded teacher for the genuine way he approached all my personal and academic problems. I remain also particularly grateful for the role he played when I was choosing the title for .his research work. I wish to express my appreciation to Urs. S.A. Gesinde, N.N. Ok oye , A.O. Alao, T. Hassan, Hr s, Nwagwu for their UNIVERSITY OF IBADAN LIBRARY vii encouragement and support throughout this long period of academic search. My gratitude also goes to Hr. Au qu st in e , the departmental secretary, Mr. Kennedy Dickson, Mr. Jacob, Mr. Clement, Mr. Joseph and Mrs. Aderele for giving me all the necessary moral and admini strat ive support. I would want to thank Professor Pai Obanya, Ursa ~.E. Ezewu, Alegbeleye, C.O. Udoh, Anyanwu, Nwankwos. These great people have always been sources of inspiration. My special thanks go to my colleagues in the department of special education - Drs. P.O. Mba, C.A. Bakare, ~.E. Adima, Mrs. ~.O. Adesokan, Dr. (Mrs.) Onwuchekwa, Mrs. Alade, Dr. (Mrs.) Oye boIa, Mr. Ikujuni, Hr. Abi odun for the interest they have always shown in my welfare. Dr. P.O. Mba's unique role as a reliable "father" is highl y apprecIat e d. May I offer my appreciati on to Mr. Oduduwa, Department al Secretary, department of special education, I'1r.Ogazi, Mr. Oluloro, Mrs .• Amajo, Miss Otuechere, Mr. Godfrey Ak pa bor-o, Mr. Benson Dike, Mrs. Caro Oyekusibe, Mrs. Adeola ~yunsola, Mr. Charles Nwaogwugwu, Charles Ibeabuchi, Okey Ekwuruke, Bosede, Mr. Akpan for their unusual cooperation and respect. UNIVERSITY OF IBADAN LIBRARY viii My thanks are due to my special friends - urs. Akpavia, Ogunsanwo, Dr. F. Okafor, Dr. Fred Onyeoziri, Dr. Fred, Dr. Akusu, Dr. Oguntimehin, Dr. E. Osuji, Dr. Onwu, Dr. Ajayi, Dr. Bola Ogunsanya, Dr. Ogwuegbu, Dr. Kalu Onwuka, Professor Anosa, Dr. Dele Braimoh, Dr. Anyanwu, Dr. Hensary, Dr. Akintayo, Mrs. Bamidele Sannoh, Dr. (Chief) Babatunde, Professor Dom Okorie, Mr. Hemi Uesimenu. The wonderful support of the above named people immensely contributed to the successful accom- plishment of this study. I must thank Dr. Onwuegbu (Provost), Federal College of Education Special, Oyo, Dr. Obani, Miss Emeruwa, Mrs. Ruth Ogbue, Mrs. K. Igbokwe for giving me the opportunity to expand and consolidate my knowLe dqe, The assistance and cooperation from the staff, children and principal of the unit school used in thi s st udy con- tributed extensively towards the successful completion of the field work. Special mention must be made of Mr. Afolabi, Gbegben, Mrs. Essen, Mrs. Olukoju for their special contribution. This is acknowLe dqe d and appreciated. My brothers - Emeka, Obinwanne, Nkenjika, Sisters - Chibuzor, Chisara, Eziokwu. Also, Mrs. Dike, Adanne, Mr. Sunday Uluocha, Azunna are also acknowledged for their moral support. UNIVERSITY OF IBADAN LIBRARY ix - My in-laws, Mrs. M.N. Okonkwo, Mr. and tvlrs. Ezeako, Mrs. Chukwuan L, Dr. and Hrs. UbosL, Mr. and Mrs. Ogbata, Capt. and Mrs. Gana, t-lr. and Mrs. Ekezie for showing a great deal of concern for my progress and well-being. I would like to thank the Umuopara and Umuahi.a communities i n Lb adan for their moral support and solidarity. My past students for enriching me with knowledge and posing all the challenges. I would want to give special thanks to ~lr. Ozoj I , Hr. Er on i nL, Hr. Okeugiri, Mr. Onyenakaya, Mr. Ukaywu. They were really yood, kind and reliable students. Some people have been particularly dear to my family and have all the time been more concerned about the progress of this work than could be imagined. These include t-Ir. and Mrs. friday Chukwuemeka Eluwa, Hr. and Mrs. Iheany Okor o , l-Ir. and Mrs. Sam Peters, Mrs. Megwa, Mrs. Lola Akinboye, Vr. and !vlrs. Gab. Osuji, Dr. and !-Irs. OLu Ogunsanwo, Hr , and Mrs. Ekw ur uke , I sincerely acknowledge their good-will. I couldn't have done much w i t hou t some kind of spiritual support. I wish to acknowledge the support of Hev.(Vr.) Louis Nunoz, Hgrs Adegbo, all the inmates of Irawo Centre in this direction. Dr. Charles Uwakwe is always push i nq and pulling in times UNIVERSITY OF IBADAN LIBRARY - x - of relaxation as far as this work is concerned. He al so gave me most of the statistical support. I deeply appreciate his encouragement and inspiration. He has come to be more of a brother than a friend. Mrs. Olaofe, Acting Director Df Computer Centre, was very much helpful with the computer services. Also to be in this direction are Hrs. Mba, and Mr. Igbani. I am most grateful. The secretarial services executed on this thesis ought to be acknowledged. I am grateful to Hr. Law. A • .s. Oje who apart from typing this thesis, helped me out with some essential materials. I would also want to acknowledge the wonderful services rendered at home by my house helps - To Chukwu and Ego. Such services provided a warm atmosphere for writing when the chi Idren were in bed. My Children - Ihuoma, Chinwe anu Oluchi were incredibly good children during the period this wurk was in progress. Al though they missed my presence at horne, they never comp La i n od, I am very appreciative. Ny wi fe - ANTllON IA I was eve r y t h ing tome. She was loving, un de r st an ui n q, source of encouragement ari d inspiration. Sh e n c-v e r- stopped praying to God for the successful completion of UNIVERSITY OF IBADAN LIBRARY xi - this work. I owe her all my love. Finally, I am most grateful to ALMIGTY GOD for making all t hi n qs possible. I do hope HE would endow His humble servant with the wisdom to use the acquired knowledge for the service of mankind and worship Him the rest of my. life. Chigorom Okechukwu Abosi UNIVERSITY OF IBADAN LIBRARY - xii CERT H~ICAT ION This is to certify that this work was carried out by Mr. Chigorom Okechukwu Abosi in the department of Guidance and Counselling, University of Ibadan, Ibadan, Nigeria. SUPERVISOR J.O. Akinboye, B.Ed., M.Ed., Ph.V., Professor of Psychology, Vepartment of Guidance and Counselling, University of Ibadan, Ibadan, Ni geri a. UNIVERSITY OF IBADAN LIBRARY xiii CONTENTS Abstract .... ·... iii Acknowledgements ·... ·... ·... vi Cert ifi cat ion ... ·... ·... ·... xii Contents ·... ·... ·... ·... xiii l'igures •••• ·... ·... .... Tables .... ·... ·... ·... .... Appendi ces .... ·... ·... ·... ·... CHAPTER OI\E: PH013LEt-1 ANv 13ACKG1WUNlJ . ·... 1 Introduction ·... ·... Review of Literature ·... •••• 7 Theoretical Background ·... ·... 7 Normal Process of language Develop- ment ·... ·... 7 Language De veIopmen t in Deaf Children 15 Nodelling ·... ·... ·... 22 !:>haping .... ·... ·... 27 Psychological Fact ors in language AchieVement ·... ·... 32 Hotivation and lan~uage Acquisition 32 !:>elfConcept and language Acquisition 36 Empirical Background .... .... 41 Language lJevelopment in Children ••• 41 UNIVERSITY OF IBADAN LIBRARY xiv Page Language Development in Deaf Children •••• •••• ·... • ••• 50 Hodellin~ ·... .... .... 58 Shaping •••• .... ·... 66 Psycholog~cal factors in language Development •••• •••• Hot ivat i on and Language Ac qui si ti on 72 Self-Concept ari d Lan j uaqe Acquisition 75 Conceptual Nouel •••• ·... ·... 77 Hypotheses ·... 79 CiiAPTER TI..'O : DESIGN 82 Desi gn .... .... ·... 82 Subjects ••• ·... •••• 0 ••• 8J Instrument s .... 84 Procedure ·... ·... 82 Pre-Treatment Assessment ... ·... 88 Heans of COlllmunication adopted for the ~udy •••• •••• •••• 90 Haseline Data ·... ·... ·... 91 Treat ment .. ·... ·... 106 Post-Treatment Assessment .. 121 CONTHOL OF EXTHAi'-:EOU::> VAHIALlLL::>·... 121 Analysis of Vata ••• • ••• ·... 12J UNIVERSITY OF IBADAN LIBRARY - xv - CHAPTER TIlREE: HE.::.ULTS ·... 126 SUHMARY UF HL.::;ULTS AI\ L.I CUI\CLU.::;IUN •• 146 CHAPTER FOUR: DISCUSSIUN ·... .... 148 Peculiarities ·... .... .... 148 Discussion of the f i n di n qs 150 Implications of the finyings .... 165 ::;u!Jyestions for further Hesearch ••• 167 HEFEHE;\CES .... ·... 169 APPE;\DICES .... 202 UNIVERSITY OF IBADAN LIBRARY xvi LI,sT OF FHlUHES fILiUHE: PAGE 1: The Conceptual Model •••• 80 2: Design of the study •••• .... 82 Baseline Graph: Achievement of the modelling high achievers group before and during treatment 0... . ... 95 4: Baseline Graph: Achievement of the modelling average achievers group be fore and during treatment •••• .... 97 5: Baseline Graph: Achievement of the modelling low achievers group before and during treatment •••• ·... 99 6 : Baseline Graph: Achievement of the Shaping high achievers group before and during intervention •••• ·... 101 7: Baseline Graph: Achievement of the Shaping average achievers group before and during intervention •••• •••• •••• 10) 8: Baseline Graph; Achievement of the Shaping low achievers group before and during intervention •••• •••• •••• ·... 105 9 : Demonstration of the mo de Lf i nu technique 107 10: Demonstration of the shaping technique 115 UNIVERSITY OF IBADAN LIBRARY xvii LIST OF TABL1:.S TABLE: PA.GE 1A: Baseline Data in English for Modelling group - High Achievers •••• •••• 1B: Baseline Data in English for Modelling group - Average Achievers 0... . ... 96 1C: Baseline Data in English for Modelling group - Low Achievers •••• •••• •••• 98 2A: Baseline lJata in English for Shaping group - High Achievers •••• 100 2B: Baseline lJata in English for ~haping group - Average Achievers •••• •••• 102 2C: Baseline Data in English for ~haping group - Low Achievers •••• •••• J: Adjusted Y-means of subjects English language achievement scores based on treatments and achievement levels .... 127 4: Analysis of Covariance of subjects English language scores on treatments anJ achieve- ment levels •••• •••• •••• 128 5: Inter-Treatment Group t-test comparison on adjusted Y-means of subjects English language achievement scores using the stan- dard error (5E) of means •••• •••• 129 6: T-test Comparison of adjusted Y-means of subjects English language achievement scores based on treatment and academic achievement levels, using the ;Standard Errors (5E) of means •••• .... .... 1)0 UNIVERSITY OF IBADAN LIBRARY xviii TAULE: PAGE 7: Adjusted ¥-means of Subject Attitude scores on treatments ari d achievement levels 135 8: Analysis of covariance of subjects attitude scores on treatments and achievement levels 136 9: Inter-Treatment group t-test comparison on adjusted ¥-m~ans of subjects attitudes scores using the means •••• ....Standard Error (~E) of• ••• ·... ·... 137 10 : T-test comparison of adjusted ¥-means of subjects attitude scores based on treat- ment and academic achievement levels using the standard error (SE) of means •••• 138 11~ Adjusted Y-means of subjects self-concept scores based on treatment and·a.c.h.ievemlevels ·e.nt.. 12: Analysis of covariance of subjects self- concept scores on treatment s and achieve- ment levels •••• •••• •••• •••• 142 13: Inter-Treatment Group t-test comparison and adjusted ¥-means of subjects self concept scores using t.h.e..Stand.a.r.d. Error (SE) ofmeans •••• • ••• ·... 143 14: T-test comparison of adjusted ¥-means of subjects self-concept scores based on treatment and academic achievement levels using the ~tandard Error (SE) of means 144 UNIVERSITY OF IBADAN LIBRARY xix LI~T Or APPENDICES APPENDIX: PAGE 1: Modell ing Programme ·... ·... 202 2: Shaping Programme ·... .... ·... 217 3: EngliSh Achievement Test ·... ·... :!.J6 4.: Attitude Scale ·... ·... ·... 24.0 5: Self-Concept ~cale ·... .... .... 24.2 UNIVERSITY OF IBADAN LIBRARY CHAPTER ONE PRUBLEM AND BACKGROUND INTRODUCTION: Auditory Perception is one of the main sensory sources through which the human organism understands the world around him. It is through the auditory senses that a .large pro- portion of human information processing takes place. Yet a number of people have this auditory modality either profoundly or mildly impaired. When an individual is hearing impaired, his learning, social interaction, general operation and adjust- ments are likely to be affected. This is why it is very crucial that intensive studies be conducted in the area of heariny impairment. A number of studies (Dale1, MyKlebust2, IvimeyJ, Cornett et a14, Mba5) have shown that the average young deaf child pro- gresses more slowly in understanding the environment in language and in social development. 1. D.M.C. Dale. Deaf Children at Home and School. London University Press, 1972. 2. H. MyKlebust. The Psychology of deafness. Grune and Stratton. New York, 1964. 3. G. Ivimey. "Transformational Grammarlf unpublished paper. University of £ondon Institute of Education, 1978. 4. o. Cornett et ale A theoretical model of the development of reading in hearing impaired children. Gallaudet Conference, Washington, 1978. 5. P.O. Mba. Language Development in Deaf Children through Natural Method. Unpublished paper Univ. of Ibadan, 1981. UNIVERSITY OF IBADAN LIBRARY - 2 - Language is an audition-based symbol by which individuals understand things and express understanding to other people. The ability of man to communicate with his fellow man is the major skill that differentiates him from animals. O'Conor 1 describes language as the gateway to the achievement of educational, vocational, social and civil competence necessary for happy and effective living. Human beings use language everyday. Most of the time, the medium of language used is either oral or written. Ayodele et al2 stressed that whatever kind of language used, the purpose is to communicate ideas, feelings, needs, news to other people. For centuries, it was considered impossible to develop language skills in the deaf children. For this reason, it was believed that the deaf could not be educated. Initially, deaf people were not allowed to hold a position of responsibility because they lacked or did not have enough language. Language is often referred to as one of the most important sources of knowledge, understanding and self realization. 1. C.D. O'Conor. Lexington SchooL for the Deaf. Eighty-eighth Annual Report, June )0, 1965. 2. S.O. Ayodele et ale Reading to Learn. Hennimann, Ibadan, 1985. UNIVERSITY OF IBADAN LIBRARY - )- Deafness imposes a heavy burden on a child who begins life without normal hearing. Not only must the deaf develop the ability to communicate without hearing, but he should also acquire the educational, vocational skills, knowledge and com- petence necessary for effective living through his eyes. In addition to a full life, the deaf should build a set of spiritual and moral values out of his daily experiences in a world devoid of sound and uninfluenced by the shades of meaning conveyed through audible speech. There is no doubt that the deaf child is severely handi- capped in the process of languag~ acquisition. The deaf child cannot hear, and his aUditory encoding and decoding process is impossible. He only employs visual decoding in the form of lip-reading, finger spelling and signing. These approaches are very much inadequate. At the age of six years the hearing child on starting school, has a vocabulary repertoire of between 2,500 to ),000 words whereas the deaf child at the same age has under 100 words. This therefore makes it very necessary that a teacher should have a good knowledge of the pattern of lan- guage development in hearing children if he is to work with deaf children. There is therefore the need to conduct more intensive studies on the factors affecting the achievement of the deaf. UNIVERSITY OF IBADAN LIBRARY - It - The deaf child differs from the hearing child in that he cannot hear and communicate in the ordinary way. His handicap is very great because of lack of words to express his thought, needs and desires. The present study adopted behavioural strategies to enhance English Language Achievement of Deaf Children. The behavioural strategies were adopted because the psychodynamic-interpersonal and the sensory-neurological mOdels are concerned wi th "why" a child behaves as he does and "how" intrahuman factors affect his behaviour. The practitioner of behaviour modification on the other hand is concerned with "what" behaviour the child exhibits that is inappropriate or unaccept- able and what intervention can be applied in efforts to change observable behaviour. Behaviour modification and its application to individual and group behaviour problems have their roots in the work of This study is considered important because the need to determine effecti ve therapeut ic techniques in enhancing 1anguage 1. I.P. Pavlov. Lectures on Conditioned reflexes Vol. 1 and 2. International Universities Press, New York, 19lt1. 2. J.B. Watson. Behaviourism. University of Chicago Press, 19)0. ). A. Bandura. Principles of Behaviour Modification. Holt. Rinehart and Watson, New York, 1969. UNIVERSITY OF IBADAN LIBRARY - 5 - achievement of deaf children cannot be over-stressed. Secondly, the first set of Nigerian deaf students attempted the West African School Certificate Examination in 1984 and have been seeking admission into various institution of higher learning. The major problem as expressed by the teachers is that of poor English language background. Dale 1 observes that many deaf children who attain mental age of say fifteen years have reading vocabulary ages of only eight or nine years. Their oral English is frequently not as syntactically correct as that of many three- year old children who have normal hearing. Dale 1 however pointed out that deaf children are able to cope with new concepts quite adequately provided they are taught skilfully. There was therefore the need of finding out whether the two strategies enhanced English language development in deaf children. It was also necessary to know which of the strategies enhanced it more. The result has provided some hope for solution to oral and written English problems among children. The two therapeutic methods adopted were modelling and shaping. The two methods represent different orientations within behaviour therapy. Modelling is a behaviour change 1. D.M.C.Dale. Deaf Children at Home and School. London University Press, 1972. UNIVERSITY OF IBADAN LIBRARY - 6 - strategy that provides vicarious experience to the observer who imitates the experiences. ~aping on the other hand is a behaviour change process in which cues, prompts and instructions are used to initiate children into performing behaviour. Every approxi- mation to expectant behaviour is continously reinforced. Among other things, this study investigated how effective these therapeutic strategies are in relation to one another in enhancing English language achievement in deaf children. It also attempted to see if effectiveness of therapy resulted in improved English language achievement. UNIVERSITY OF IBADAN LIBRARY - 7 - LITERATURE REVIEW A study of this nature would need to be backed up with sufficient literature. Such literatures will expose the past works done that are relevant to the present study. The result obtained from the study will also be much more meaningful. The literature review on this study will therefore be treated under two headings, thus theoretical and empirical backgrounds. Theoretical Background& All normal children in a normal environment acquire ,1an- guage (Ginsberg and Shatz1). But the mystery of how a child learns to speak has intrigued and puzzled adults for many gene- rations. each child exposed to a different sample of language will arrive 1. E.H. Ginsberg and M. Shatz. Linguistic Input and Child's Acquisition of language. Psychological Bulletin 1982, vol. 92, No.1. 2. B. Klima. Linguistic Mechanism underlying child speech. In E.M. Zals (Ed.). Proceedings of Conference on language and language behaviour, Appletton-Century-Crofts 25, N. York, 1968. J. F. Smith. Understanding Reading. Holt-Rinehart and Winston, Inc. N. York, 1971. 4. J.A. Emig et ale Language and Learning. Harcourt World Inc. N. York, 1966. G. Brown. Child Development. Open Books, London, 1977. / 6. R. Brown. Social psychology. The Free Press, N. York, 1966. UNIVERSITY OF IBADAN LIBRARY - 8 - at essentially the same grammar in a short time whether the child was taught or not. ~ach child rapidly becomes a full fledged member of language community, able to produce and com- prehend an endless variety of novel and meaningful utterances Until recently behaviouristic psychology looked upon language and the task of first language learning as just another form of human behaviour which could be reduced to the laws of conditioning. The point that is made here however is that a child creatively constructs his language on his own in accordance with innate and interinsic capacities. In other words, a child develops new theories as he grows. This situation differs radically from the traditional view of a child whose learning is governed by variables such as frequency, recency, contiguity and reinforcement (Black1). Blac kl observed that the ~.nfants early attempts at vocal communication are quite different from human language in many important ways. There is a repertoire of inborn noises ex- pressing a spectrum of need states. However, it will take a long time before vocalization are used to designate objects or events. 1. M. Black. The Importance of Language. New York Englewood Cliffs, 1972. UNIVERSITY OF IBADAN LIBRARY - 9 - Smith1, Chomsky2, SlobinJ all agree that normal children acquire language in the same manner. Thus at the age of three months, the child babblesl at about 18 months, the child pro- duces his first two word utterances; by J~ years, he appears to have mastered all the important rules of his language. They however point out that the child's vocabulary may not be as rich as that of adults; the child may not talk about such complex events but he has constructed for himself a grammar that gives him the competence to produce and comprehend all the possible types of sentences used by the language community in which he lives. Supporting the above view (Maratsos and Chalkley~, Pinker5, Brown6 stress that spoken language is literally self taught to a degree far beyond the appreciation of most parents and many specialist in child development. 1. F. Smith. Under~tanding Readingl A Psycholinguistic Analysis of reading and learning to read. Holt Rinehart and·Winston Inc. N. York, 1971. 2. N.A. Chomsky. Language and Mind. Harcourt Brace. New York. 1968. J. D.I. Slobin. Recall of full and truncated passive sentences connected discourse. J. Verb learn. Verb. Beh. 7. 1968. ~. C. Maratsos findT. 'Chalkley. The internal La nguaqe of children's syntax. In K.-~. Nelson. (Ed.). Children's language vol. 2, Gardner Press, N. Yo'rR, 1980. 5. S. Pinker. On~the acquisition of grammatical morphones. Journal of child psychology 8, 1981. 6. R. Brown. How shall a thing be called? Psychological Review 65, 1958. UNIVERSITY OF IBADAN LIBRARY - 10 - Maratsos et aI1(1980) maintain that most children learn to speak without any need for formal instruction. They go on to say that the process of first language learning proceeds in an extremely rapid, smooth and predictable sequence, indicating that a child is well equiped bioloyically both to learn and use language. Miller and M.cneil12 point out that during the first few years of life, children find no particular difficulty in learning any language. They are not born more ready to speak one language than another. They observed that at three months, it is impossible to distinguish the babbling of a Chinesse child from that of an African. Contrary to popular pracental belief, the child is not learning words and then finding meaning for them. Instead he is acquiring or inventing words which mayor may not have a close relation to adult language. \RJe1• r3 stresses that even at the holoplastic stage, babies are speaking more language than a Chi mpanz.e could even i'earn• ••• 1. C. Maratsos and T. Chalkley. The internal language of children's syntax. In K•.b;. Na.v son (Ed.) Children's language vol. 2. Gardner Press, New York, 1980. 2. G. A. Miller and D. Mcneill. Psycholinguistics. In Lindzey and Aronson, .b;. (Ed). Handbook of Social Psy- chology. Addison-Wesley Mass. 1968. 3. R.H. Weir. Language in the crib. The Hague Mouton, 1962. UNIVERSITY OF IBADAN LIBRARY - 11 - While Chimpazee words are literally signs, in that there is one to one correspondence between each sound and its meaning, a human infant is already communicating complex underlying structure but not the transformations to put words together at the surface level. Normally, by 18 months, many children have acquired a powerful syntactic rule. At this age, they are producing two or three word phrases like "see baby" "All gone sugar". Two as aspects of this development are significant, firstly these short sentences are certainly not imitated from parents but are genuinely constructed by the child himself and secondly the constructions are not random (Weir1). The task for the language learning child is to find out what are the rules of grammar - to uncover the structure that lies beneath the surface of every utterance and that bridges the gap between sound and meaning. Carden 2 points out that what the child does is to try out alternative rules for constructing the kind. of sentences that he hears. The child never repeats a sentence that he hears an adult utters. In this light, the responsibility of parents becomes clear; they should provide a child with information when 1. R.H. Weir. Language in the crib. The Hague. Mouton, 1962. 2. C. Carden. Environmental Assistance to the child's acquisition of grammar. Doctoral thesis, School of Education, Harvard University, 1965. UNIVERSITY OF IBADAN LIBRARY - 12 - he needs it. The child needs feedback to tell him whether he is observing the significant differences of his language. When parents expand a child's language, they only provide him with an adult lanUuage surface structure for a deep struc- ture that the child already has in his mind. It is not a matter of correct ing an item of a chil d's 1anguage but of giving information so that the child can verify a rule that has just been applied at a time when he can relate it to the appropriate deep structure (Baratz and Shuy 1, Carden 2). Chomsky3 and Lenneberg4 maintained that the child learning to talk, looks for rules that will reduce some of the uncer- tainty of the world around him. In the normal progression of development, the child goes on to apply the same rule in order to discover skills to the task of learning how to read. 1. J.E. Baratz and H.W. Shuy. Teaching black children to read. Washington D.C. Confer. for Applied Lingui st i cs, 1969. 2. C. Carden. Environmental Assistance to the Child's acquisition of grammar. Doctoral thesis. School of Education, Harvard University, 1965. J. N.A. Chomsky. A review of li.F. Skinner's Verbal Behaviour language 35, 1959. 4. E.H. Lenneberg. On explaining language. Science 1969. UNIVERSITY OF BADAN LIBRARY - 13 - The frontier knowledge in theory and research of lan- guage development in children is to emphasize universality and existence of innate and biological determinants of such univer- sality (Chomsky1, Lenneberg2). The arguments around the issue of innate factors in language acquisition are complex and heated. The complexity has made it plausible to postulate that the child's mind is somehow set in a pre-determined way to pro- cess the sort of structure which characterises human language arriving at something like a transformational grammar of his native language. Different behavioural principles have been more commonly used to attempt to explain the manner in which words come to be uttered in specific contexts. The explanation hinges upon the fact that acts which are reinforced or rewarded in some way are likely to be repeated. This is a situation which will be exploited in the present study. Skinner3 proposed a much more detailed and elaborate explanation of behaviour principles. He proposed that an 1. N.A. Chomsky. It. review of B.F. Skinner's Verbal Behaviour language. 35, 1959. 2. E.H. Lenneberg. On explaining language Science 1969 164. J. B.F. Skinner. Beyond Freedom and dignit y , Alfred A. Knopf Inc. New York, 1971. UNIVERSITY OF IBADAN LIBRARY - 14 - utterance which asked for something would be reinforced if what- ever that was asked for was produced. Skinner further said that class of operants were those which the child reinforced by self-stimulation. Repetition of invented sounds or sounds uttered by adults would be the source of what Skinner called echoic responses. And by repeating such sounds to his own satisfaction, the child would be reinforcing himself. These pro- cesses of operant conditioning often achieve success by shaping behaviour toward some desired outcome. Another approach to discovering the mechanism of and con- straints on language acquisition has been to construct formal models of the acquisition procedure and subject these models to mathematical proof (Anderson1, Wexler and Culicover2). Unlike the developmentalists who are concerned with the course of acquisition of language, the focus of this approach has been to account for the fact of acquisition by describing the con- ditions under which language can be demonstrated to be Learn- One conclusion with implication for acquisition 1. J. Anderson. Language Acquisition by Computer and Child. (Tech. Rep. 55) Ann Arbor. University of Michigan Dept. of Psychology, December, 1977. 2. K. Wexler and P. Culicover. Formal principles of Language acq~isition. Mass HIT Press, Cambridge, 1980. J. S. Pinker. On the acquisition of grammatical morphemes. Journal of Child Psychology 8, 1981. UNIVERSITY OF IBADAN LIBRARY - 15 - theories is that language is not learnable from an unordered sample of sentences (Gold1). Some additional constraints must be provided, either in the input or in the form of a priori knowledge, which reduces the number of hypotheses the child has to entertain. The kind of input that would most easily solve the for- mal problem is getting feedbacks and identifying ungrammatical strings. This solution has typically been rejected as unrea- listic on the basis of Brown and Hanlons (1970) assertion that mothers do not often correct ungrammatical utterances produced by their language-learning children. The children do not even pay much attention to such feedback when they get it. Further- more (Brown and Hanlon 2 ) found that mothers were equally able to respond with sequiturs to their children's primitive and well-formed utterances. Language Development in Deaf Childrena In most countries including Nigeria, people still refer to the deaf as dumb. The reason for this misconception could be that in the past many deaf people were unable to talk at all. 1. E. Gold. Language identification in the limit. Information and Control 16, 1967. 2. R. Brown and C. Hanlon. Derivational Complexity and order of acquisition in Child Speech. In J.R. Hayes (Ed.) Cognition and development of lan- guage. Wiley, New York, 1970. UNIVERSITY OF IBADAN LIBRARY - 16 - Again it has been observed that when children are born deaf, it is impossible for them to develop absolute normal speech (Dale1). However, we speak as we hear; if a person is born in Ibadan, he hears Yoruba all around him; so that when he is old enough to talk, Yoruba words are produced. Again if the person was born in Abiriba, his speech would have a typical Abiriba accent. But if a child was born profoundly deaf, he would hear no speech at all and as a result would speak little until specially taught to do so. Deax children do not realize that words exist. They only see all sorts of movements about them but words play no part in these. Gradually however as Myklebust 2 puts it, the deaf would become aware that the movements of mother's or fahter's lips do mean certain things. In dealing with the language of deaf children, one should be mainly concerned with the semantics rather than the syntax. This is so because research has shown that the language con- struction of deaf children is full of gaps, although the meaning 1. D.M.C. Dale. Deaf children at home and school. University ox London Press, 1972. 2. H. Myklebust. The psychology of deafness. Grune and Stratton, New York, 1964. UNIVERSITY OF IBADAN LIBRARY - 17 - they convey could be conceived with much problem. I, 1v a me y , S1'Iverman2, Dal)e have shIotwn a 0 0f'1.nterest'1n t n1i .Sarea 0f language development of the deaf. Ivimeyl and Dale) maintain that the deaf have no orderly syntactic knowledge. Blanton 4 asserts that the deaf pre- sumably lack English syntactic organization and that if any exists, it is unknoftn. Furth5 seems to agree with Blanton in that view. Fusfeld 6 goes further to say that the writing of the deaf is a "tangled web type of expression in which words occur in profusion but do not align themselves in an orderly way". 1. G. Ivimey. Trans~.rmational Grammar. Unpublished paper. University of London Institute of Education, 1976. 2. S.R. Silverman and H. Davies. Hearing and Deafness. Holt Rinehart and Winston, New York, 1960. J. D.M.C. Dale. Deaf Children at home and school. University of London Press, 1972. 4. R.L. Blanton. Symbolic and Linguistic Processes of the deaf. Vanderbilt University, 1974. 5. H.G. Furth. A comparison of reading test norms of deaf and hearing children. American Annals of the deaf March 1966. 6. I.S. Fusfeld. The academic programme of school for the Deaf. Volta Review vol. 57, 1965. UNIVERSITY OF IBADAN LIBRARY - 18 - Simmons1 reports deaf children's preference for short, simple expressions. Fusfeld2 also categorizes deaf children's language as displaying "poorly developed grammatical abilities". Myklebust] quotes many features common to the language of deaf children, notably omission of function - as opposed to con- tent - words, with many unnecessary additions and substitutions, especially in verb phrases construction. Groht4 maintains that deaf children cannot express them- selves without help. They must be approached as far as lan- guage is concerned in very special way. LeVl.ne5 says that b y language of actions, moods and attitudes, the deaf child tries his best to achieve meaningful contact with the world. Pel.6. maintains that the deaf child knows nothing of structure of 1. A. Simmon. Comparison of written and spoken language for deaf and hearing children at five age levels. Unpublished doctoral dissertation. Washington University, 1962. 2. I.S. Fusf'e Ld , The academic programme of school for the Deaf. Volta Review vol. 57, 1965. 1. H. MyKlebust. The psychology of deafness. Grune and Stratton. New York, 1974. 4. Groht. Natural language for Ueaf children. Alex Graham Bell. Ass. for the Deaf Inc. Washington, 1958. 5. E.S. Levine. Nursery school and the deaf child. Volta Review 57, 1965. 6. M. Pei. All about language. J.B. Lippincott Co. New York, 1964. UNIVERSITY OF IBADAN LIBRARY - 19 - language but is motivated solely by his needs, feelings, thoughts and emotions. The real purpose of language according to him is to carry meaning and to transfer thought from one human brain to another. If language doesn't do this, it isn't language - it is just sound or gesture he stresses. McCarthy 1 maintains that a young deaf child should become acquainted with language in the same cas~al and informal way in which the hearing child does. He says that if language is ever going to be vital to the deaf child, it must be attained by him, not as a lesson but as a meaning approach to a very necessary, useful and happy way of understanding himself and others. A central question in developmental psycholinguistics has been the extent to which the course and outcome of normal development are constrained by properties of the environment and by properties of the child. Caplon and Chomsky 2 propose that language acquisition depends on input to set a few basic parameters but that once a particular line of development is established, the full richness 1. D. McCarthy. Language Development in children in Manual of Child Psychology. Carmichael, L. (ed. ) John Wiley, New York, 1976 -. 2. N. Caplon and N. Chomsky. Language and Mind. Harcourt Brace, New York, 1968. UNIVERSITY OF IBADAN LIBRARY - 20 - and detail of language unfold following the blueprint of the genetic programme. As Caplon and Chomsky noted, this model suggests there should be a strong dependence of acquisition on a few critical properties of input. Further specification of genetically defined options and the environmental variables that set those parameters would allow empirical investigations of a position that has generally been impossible to disprove. Traditionally, some psychologists' claim has been that the child must have rich innate linguistic knowledge because there is no way he could achieve language otherwise. This position reduces to the assertion that the child's input is too poor and her or his general inductive abilities too weak to account for acquisition. The argument that the child's input is inadequate to support language acquisition has been interpreted in two ways. One view is that the language the child hears is a poor sample of the language he must learn. The operant conditioning theory postulates that the probability of response emission increases with reinforcement and the social learning theory also main- tains that all behaviours can be learnt. A number of published theoretical statements have attempted to account for the development of language in children in recent years. The primary emphasis in these accounts has varied UNIVERSITY OF IBADAN LIBRARY - 21 - considerably, from the learning theory accounts of Sk~.nner 1 and Staats2 emphasizing the role of reinforcement and imitation, to the accounts of LennebergJ and McNeil4 which emphasized the role of biological and innate components in language development. Despite the diversity of theoretical orientation, most researchers in Children language agree that children appear to exhibit IIgenerativell repertoires very early in the development of language. That is, children emit language that has appeared in their repertoires previously. Children also emit language that has been neither directly taught nor demonstrated to them by other speakers. Ervin5 for example has used the terms lIanalogy" to refer among other things to the occurrence of plural forms such as IIfeet S" IIfoot s!' and IIman Sll. Although these plural forms appear to be extensions of normal English plurali- zation forms, it appears unlikely that these responses were 1. B.F. Skinner. Science and Human Behaviour. MacMillan Inc. New York, 195J. 2. A.W. Staats. Learning language and cognition. Holt-Rinehart and Winston, New York, 1958. J. E.H. Lenneberg. On explaining language. Science 164 1969. 4. D. McNeil. Developmental Psycholinguistics. In F. Smith and G.S. Miller (Eds.) The genesis of language. MIT. Press, Cambridge. 5. S.M. Ervin, Imitation and structural change in children's language. In E. Lenneberg (Ed.) New directions in study of language. Mass MIT Press, Cambridge, 1964. UNIVERSITY OF IBADAN LIBRARY - 22 - taught directly to the child or heard by him in the speech of others. Brown and Bellugi1 have discussed similar phenomena under the label of "induction of the latent structure". MOVELLING: Modelling is one of the most frequently applied methods of changing behavoural. It is often one of several components of bellavioural training programmes (Gladstone and Sherman,2 . 3 4: R r nqe r' , Wet zel , F·~nney 5 , Strupp and Jenk~.ns.6) Akinboye7 defines modelling as a behaviour change strategy that developed 1. R. Brown and U. Bellugi. Three processes in child's acquisition of syntax. In E. Lenneberg (Ed.). New directions in stUdy of language. Mass MIT Press Cambridge, 1964:. 2. B.W. Gladstone and J.A. Sherman. Developing generalized Behaviour modification skills in high school student working with Retarded children. J. App. Analysis, 1975, 8, 169-180. ). V.M.J. Ringer. The use of "token helper" in the manage- ment of classroom behaviour problems and in teaching training. J. of App. Beh. Analysis, 197), 6, 671-677. 4. R.J. Wetzel. Behaviour Modification techniques and training of teachers aid. Psy. in the school 1970, 7, 325-330. 5. B.C. Finney. Some teChniques and procedures for teaching psychotherapy. Psychotherapy: Theory, Research and Practice, 1968, 5. UNIVERSITY OF IBADAN LIBRARY - 2) - from social learning principles. The major concept of the social learning principles according to Akinboye is that human behaviour is powerfully influenced by that which he observes, hears, feels, perceives, conceives, creates or participates in. Modelling is thus a behaviour change strategy that provides experiences to observer who may imitate the experiences. Baer, Wol f and R1.S 1ey 1 on the other hand had defined applied behaviour therapy as the application of behaviour tech- niques to the solution of socially relevant problems. They maintained that the successful application of behaviour modifi- cation techniques in homes, classrooms, institutional settings has stimulated interest in the experimental psychology. Research has also shown that parents, teachers and others interested in the welfare of children could be taught to apply those techniques themselves. Skinner2 had stressed that in providing effective contin- gencies, in behaviour modification, teachers may arrange rele- vant antecedent events by telling their students how to perform through verbal and written instructions and by showing them how 1. D. Baer, M. Wolf and T. Risley. Some current dimensions of applied behaviour analy~is. Journal of Applied Behaviour Analysis, 1968. 2. B.F. Skinner. Science and Human Behaviour. MacMillan Inc. New York, 1953. UNIVERSITY OF IBADAN LIBRARY - 2lt - to perform by modelling. Modelling seems to have many advantages as a therapeutic technique (Adorno1). Adorno points out that a picture is worth a thousand words. He maintains that a model can provide topo- graphical discriminative cues for desired trainee responses that cannot easily or conveniently be presented through written or verbal instruction. Modelling by itself may not be sufficient to achieve the desired performance in every situation. This is because in teaching and learning new skills, verbal instruction may com- plement modelling by increasing the likelihood that trainees will attend to relevant rather than irrelevant features of model's performance (Hall, Lund and Jackson,2 Harris, Wolf and BaerJ , It Madsen Becker and Thomas ). Factual and corrective feedback may 1. T.W. Adorno. The authoritarian Personality. Harper and Row. New York, 1950. 2. R. Hall, D. Lund and D. Jackson. Effects of teachers attention on study behaviour. Journal of Applied Behaviour Analysis I, 1968. ). J. Harris, M. Wolf and G. Baer. Language for the pre- school child. Gruns and Straton, New York, 1976. 4. C. Madsen, W. Becker and D. Thomas. Rules, Praise and Ignoring elements of elementary classroom control. Journal of Applied Behaviour Analysis It 1968. UNIVERSITY OF IBADAN LIBRARY - 25 - also complement modelling by increasing the similarity Qetween trainee responses and the model's performance (Kanfer and Goldste~.n 1)• Kanfer and Goldstein1 refer to modelling as the process of observational learning in which the behaviour of the indivi- dual or group acts as a stimulus for the thought, attitude or behaviour of another individual who observes the model's perfor- mance. Aniegbuna2 distinguished between learning and performance. BanduraJ maintains that the requirement for learning through modelling is the observation of a model. The response of the model is assumed to be acquired by the observer through a cog- nitive coding of the observed event. It is important to note that whether a learned response is performed, depended on res- ponse consequences associated with the response. Bandura4 outlined modelling in the following manner - In the first stage of the process, the model's behaviour is attended 1. F.H. Kanfer and A.P. Goldstein. Helping people change. Pergamon, New York, 1975. 2. C.C. Aniegbuna. Differential effectiveness of shaping and modelling on Maths achievement and intelli- gence of some secondary SChool blind Doctoral thesis. University of Ibadan, 1984. J. A. Bandura. Principles of Behaviour modification. Holt Rinehart and Watson, New York, 1969. 4. A. Bandura. Psychotherapy Based Upon Modelling. Wiley, New Yorm, 1971. UNIVERSITY OF IBADAN LIBRARY - 26 - to by an observer. Thi s he called tithe acquisition stagetla during this period, the actions of the model are acquired by the observer. The second stage is the performance of the imitator in the modelled response. The difference between acquisition and performance is very important because the res- ponse acquired by the observer may not actually be performed by him. There are factors that could enhance the acquisition of a response. These have been extensively discussed under the psychological factors. There is another factor which could influence acquisition. This is the characteristic of the modelling presentation. The state of the model - whether the display is life or symbolic, whether the observed response is complex or broken into manageable components and the nature of the given instructions, determine the impact of modelling on the m~.nd of the observer (.Ak~nboye 1) • Another important factor that could enhance performance is adequate vicarious reinforcement. Vicarious reinforcement is in-built into the actions bf the model who endeavours to present behaviours that would be reinforcing to the observer. 1. J.O. Akinboye. Lectures on Principles of Behaviour Modification. University of Ibadan, 1983. UNIVERSITY OF IBADAN LIBRARY - 27 - SHAPING: Behaviours that are not in the repertoire of the client are non-existent in the client. Such behaviours are to be newly acquired. Akinboye1 describes shaping as one of the behaviour change methods that can be used to help acquire many behaviour deficits such as inability to read, write, pronounce words, walk, run, jump, relate and socialize. Walker and Shea1 define shaping as a systematic immediate reinforcement of successive approximations of desired behaviour until the desired behaviour is established. They maintain that shaping is primarily used to establish behaviours that have not been previously manifested in the individual's behavioural repertoire. Almost as the sculptor shapes and mo~lQ an object of art from clay, the behaviour modification practitioner shapes and moulds a new behaviour from undifferentiated behavioural response. Ross 2 had outlined the following sequences of shaping: the presence of a discriminati ve stimulus; the em.i ssi on of operant response; the presentation of a reinforcing stimulus which is usually followed by a consumatory response. 1. J.E. Walker and T.M. Shea. Behaviour Modification. A practical approach for educators. The C.V. Mosby Co. Saint Louis, 1976. 2. Ross. Behaviour therapy: In B. Wolman (ed.) Manual of child psychopaths. McGraw-Hill Book Company, 1972. UNIVERSITY OF IBADAN LIBRARY - 28 - Shaping procedure is very useful in a learning situation where the response is lacking. For shaping, each new form of behaviour to be shaped is identified and approximations to such desired behaviours are also identified for reinforcement. We can produce a new behaviour by picking level of varian~e pf ~ existing response and reinforcing it. If the various skills involved in shaping procedure are gradually and progressively applied, the behaviour could be moved to the relevant direction. Each new form of behaviour is an approximation to the desired terminal behaviour. This selective reinforcement and extinction process is called "successive approximation" or shaping (Millenson1>. Walker and Shea 2 have listed six steps in the behaviour shaping process thusl i. Selecting a target ii. Obtaining reliable baseline data iii. Selecting potent reinforcers iv. Reinforcing successive approximation of the desired behaviour each time they occur v. Reinforcing the newly established behaviour each time it occurs. 1. J.R. Millenson. Principles of Behavioural Analysis. MacMillan, New York, 1967. 2. J.E. Walker and T.M. Shea. Behaviour Modification. A practical approach for educato1r9s~osby Company. Sa~nt Lou~s, 7.6. The C.Y. UNIVERSITY OF IBADAN LIBRARY - 29 - vi. Reinforcing the behaviour on a variable reinforce- ment schedule. Kanfer and Goldstein1 listed seven steps in ther own view thus i. Begin by observing individuals whose behaviour is is considered to be deficient. Observe the res- ponses that occur at high frequency, identify the antecedent and consequent environmental stimuli associated with those high frequency behaviours. Note the variability in topography of the available response. ii." Based upon the observational data, decide (a) whether the de sired terminal response can be differentiated out of the existing behaviour and if so, (b) What a first approximation to the end goal should be. iii. Establish the criterion for the first approximation. Blackwood2 points out that the criterion of dividing responses must be divided into two classes. (1) response that we would like most and (2) res- ponsea that we would like least. 1. F.H. Kanf~and A.P. Goldstein. Helping People Change. Pergamon, New York, 1975. UNIVERSITY OF IBADAN LIBRARY - )0 - iv. Arrange the setting for maximum likelihood of response emission. v. Differentially reinforce (with the most powerful reinforcers at your disposal, food, praise, physi- cal affection etc.). Variants of on-going behaviour that may be crude first approximations of the desired response. Withdraw reinforcement from variants that are incompartible with the desired end goal. vi. Observe the shift in the direction of the goal behaviour and shift the criterion accordingly if repeated reinforcement fails to reliably establish a response, the criterion may need to be lowered. vii. Use verbal or gestural cues, prompts or instruc- tion at all stages of the process, even though the cues do not at first reliably elicit the behaviour being shpped. At the outse~ of the shaping pro- cedure, the child's behaviour will determine what cues the shaper will use. The increase flexibility occurring in shaping approach gives the child much more latitude in terms of shaping his lexicon. The shapiug approach then has obvious implications for the way in which the child deals with meaning or semantic development and the consequent implication for the development UNIVERSITY OF IBADAN LIBRARY - )1 - of reading ability. The child exposed to language through the shaping process has a clear and complete code to follow. Cornett et . aI1 observes that this approach offers fidelity to written code of English that could prove advantageous to development of reading. While the early laboratory demonstrations of shaping were interesting, it would be right to say that reinforcement is an important aspect of shaping strategy. Some psychologists have also described reinforcement as an important tool in behaviour therapy (Okoye2). However, it ~s Thorndike) that originally proposed the law of effect which states that learning occurs as a result of reinforcement. This means that law of effect holds that an act will be strengthened or weakened; that is, it will be reinforced positively or negatively depending on its consequences. In some situation or in he presence of cer- tain stimuli, a particular response may be reinforced, while in other situation or in the presence of other stimuli it is not. 1. O. Cornett, N.H. Hey, C. Williams and V.A. Knight. Theoretical Model of development of reading in hearing impaired. A paper presented Gallandet, 1978. 2. N.N. Okoye. The psychology of effective learning. Department of Guidance and Counselling, University of Ibadan, 1981. UNIVERSITY OF IBADAN LIBRARY - 32 - Psychological Factors in Language Achievement I Certain psychological influences have been associated with language achievement. These include motivation, locus of control, self concept, attitude etc. Motivation and Language Acquisitionl The inner urge or desire to study originates from the expected end-product of studying. Ayodele 1 maintains that the motives of an individual determine why and how he performs particular acts. A student who sets reasonable goals already has the compelling desire to succeed. The increased complexity of living in society has made it necessary to cultivate in the young the will to acquire many varied cognitive as well as physical skills. Child2 gave a working definition of motivation to consist of internal process which spur us on to satisfy some need. Motivation is believed to operate through a common mecha- nism (Mcclelland et al3 ). This commonality is the conceptuali- zation of motives as deficit states which energise an organism 1. 5.0. Ayodele, 5.L. James, V.C. Ajala. Reading to Learn. Reading Association of Nigeria (RAN). Monograph series B. Heinemann education Books, 1985. 2. D. Child. Psychology and the teacher. Holt, Rinehart and Wiston, London, 1973. 3. D.C. Mcclelland, J.W. Atkinson, R.A. Clark and E.L. Lowell. The Achievement Motive. Irvington publishers, N. York, 1976. UNIVERSITY OF IBADAN LIBRARY - 33 - until relief is attained or equilibrium restored. This view has received support from many authors (Miller and Uollard 1, Hull2, Murray and Kluchahn J ). Mowrer4 developed the concept of motives as energisers of the activities of the organism. He viewed motivation primarily as anxiety over the possibility of painful sensations to arise from failure to satisfy primary biological needs. Essentially, this view assigns to motive the property of negative effective state derived :primarily from painful experience. Mowrer4 proposes that all the basic needs are types of discomfort and are in the broad sense painful. Human beings are capable of being motivated not only by organic needs that are immediately present and felt, but also by the mere anticipation of such needs. The key to all motives is anxiety (Mowrer5>. In spite of the richness of tensional conceptualization of motive, some psychologists have sonsidered it inadequate for 1. N.E. Miller, and J. Uollard. Social learning and imitation. Yale University Press, New Haven, 1941. 2. C.L. Hull. Principles of Behaviour. Appleton-Century- Crofts. New York, 1943. ). C. Luckhohn and H.A. Murray. Personality in Nature, Society and Culture. Knopf, New York, 1948. 4. O.H. Mowrer. Learning Theory and Personality Uynamics. Ronald Press, 1950. 5. O.H. Mowrer. Motivation, in C.P. Stone and D.W. Taylow (Eds.). Annual Review of Psychology. Annual Review, Stanford, 1952. UNIVERSITY OF IBADAN LIBRARY - 34 - explaining the mechanism of motivation (Allport 1, Young 2 , Recently, motivation has again been generally looked at from the tension-reduction perspective. This time, however, certain additions and elaboration have been incorporated. Proposing what he descr ibe d as working rne chan i cs of mot ivat ion, Okoye5 states that motivation starts off when an individual is pushed off an equilibrium situation, and as a result, the person finds himself in a state of need. Awareness of this state of need produces drive. For drive to be reduced, the activities generate d nee d to be chann e Ll ed into purposi ve b eh av i our. Channelling of activities into purposive behaviour is done by a process Okoye5 calls mechanism. In this process, emotions are evoked to sustain the generated activities till the organism attains drive reduction. Okoye there- fore stresses that there are motives behind all human 1. G.W. Allport. Personality. A psychological inter- pretation. Holt, New York, 1937. 2. P.T. Young. Food seek i n q drive, effective process and learning. Psychological review, LVI. 1949. D.G. Hebb. The organisation of rlehaviour. Wiley, New York, 1949. 4. A.II. Haslow. The instinctoid nature of bas i c needs. Journal of Personality, 1953. 5. N.N. Ok oye, The psycholoUY of effective learning. Departrnent of Guidance and Counselling, University of Ibadan. UNIVERSITY OF IBADAN LIBRARY - 35 - behaviours, and that motivation is a necessary fillip in life for progress and growth as well as adjustment associated with self-actualization. McClelland et al1 had acknowledged that psychologists have had difficulty in considering the possibility that cer- tain types of sensory stimulation are innately painful. Some other researchers Young2, Sheffield and Roby3, Weiner and Stellar '* , Sheff1.eld et al5. and N1ssen and Semmes6 have argued in support of motivational effect of certain innate gratifi- cation. 1. D.C. McClelland, J.W. Atkinson, R.A. Clark and E.L. Lowell. The Achievement Motive. Irvington Publishers, New York, 1976. 2. P.T. Young. Food seeking drive, affective process and learning. Psychological Review, LVI 98, 19'*9. F.D. Sheffield and T.B. Roby. Reward value of a non- nutritive sweet taste. J. of Comp. Physiol. Psychol. '*3. 1950. It. I.H. Weiner and .t;. Stellar. Salt preference of the rat determined by a single stimulus method. J. Comp. Physiol. PsyChol. '*'*,1951. 5. F.D. Sheffield, J.J. Wulff and R. Backer. Reward value of copulation without sex drive reduction. J. Comp. Physiol. Psychol. '*'*1951. 6. H.W. Nissen and J. Semmes. Comparative and physio- logical psychology. In C.P. Stone and D.W. Taylor (Eds.). Annual Review of Psychology. Stanford: Annual Review, 1952. UNIVERSITY OF IBADAN LIBRARY - )6 - Self-Concept and Language Acquisitionl The self concept is the totality of attitudes, judgement and values of an individual relating to his behaviour attitudes and qualities. The self concept reflects who the person is. It does not only include feelings towards the self and others but also the moral structure, attitudes values and ideas that propel one to action or on the other hand, to inaction. Mouly 1 says that self concept includes feelings about self both physical self, psychological self in relation to the environment. Calhoun and Acocella2 define self concept as "Your own view of your self" and pointed out t.n at it has three dimensions. They are one's knowledge of one's self, one's expectations for one's self and one's evaluation of one's self. Within a healthy person, there should be a good deal of compatibility among the three dimensions of self. In other words, self consistency is basic to self competency in human functioning. If discrepancy exists among the components, anxiety is created. Pietrofesa et a13 maintains that one's 1. G.J. Mouly. Psychology for effective teaching. Holt Rinehart and Winston Inc., New York, 1973. 2. F.J. Calhoun and Acocella, R.J. Psychology of adjust- ment and human relations. Pandom House Inc. New York, 1978. ). H. Pietrofesa and Splete, P. Counselling theory Research and Practice. Hand Mcnally College Publishing Co., Chicago, 1978. UNIVERSITY OF IBADAN LIBRARY - 37 - self concept tends to reinforce itself through selective per- ception. A person selects from an experience which reinforces the self concept he has already developed and rejects that which might be contrary to present feelings or beliefs. A major aspect of the self concept is one's knowledge of one's self. People are generally aware of several things about themselves. However, these qualities about one's self undergo changes as people gain more experience and better under- standing of themselves. An important fact with regard to one's knowledge of one's self is its subjectivity. In other words, one's knowledge of one's self might be positive or negative depending on how we perceive ourselves. Some seemingly perma- nent and outstanding aspects of one might be played down in our self concept while some other insignificant parts might be highlighted. Rogers 1 po~.nts out that the greater the d~.scre- pancy between our picture or what we are and our picture of what we should or could be, the lower our self esteem. This leads us to an examination of positive and negative self con- cept. Self-Concept can be negative or positive. Negative self concept correlates positively with low self esteem while 1. C.R. Rogers. On becoming a Personl A therapist's view of psychotherapy. Houghton Mifflin Sentry Edition, Boston, 1970. UNIVERSITY OF IBADAN LIBRARY - 38 - positive self concept correlates positively with high self esteem. In some cases people with negative self concept are characterized by a disorganised sense of self as is the case with some adolescents who are undergoing a transition from childhood to adulthood. On the other hand a negative self concept could be that characterized by too much rigidity such that the individual becomes threatened by new information about hLm or hersel f. This is also the case with the individual who has a disorganised concept of himself. Sull·~van1 po~.nt s out that a person with a disorganised or narrow self-concept simply does not have any mental categories to which he can relate conflicting information about himself. A negative self-concept is consequent to a negative self judgement and in this case individuals with negative self concept never see anything good about themselves. Calhoun and Acocella 2 believe that they are characterised by a relatively high level of anxiety. The positive self concept is that which results from self acceptance. Chodorkoff3 had 1. H.S. Sullivan. The structure of personality in Hall, C.S. and G. Lindzey. Theoriest of personality. John Wiley and Sons, New York, 1978. 2. F.J. Calhoun and H.J. Acocella. Psychology of adjust- ment and human relations. Pandom House Inc. New York, 1978. 3. B. Chodorkoff. Self-Perception, Perceptual defence and adjustment. Journal of Abnormal and social psycho- ~, vol. ~9, No. 62, 195~. UNIVERSITY OF IBADAN LIBRARY - 39 - pointed out that the individual with positive self concept could be characterized by a very thorough knowledge of himself. He is aware of and gives room for positive and negative infor- mation about self. Thus the person with a positive self-concept can understand and accept a great deal of disparate information about self. Because positive self concept is large enough to accommodate the entire range of the person's mental experience, his evaluation of himself is positive. This does not mean however that such individuals do not recognise their faults. The fact is that they have no regrets about their existence. People with positive self concept have the ability to set appropriate and realistic goals for themselves which they nor- mally achieve and this further enhances their positive self- concept. This seeming vicious circle of success and positive self-concept enable the individual to face life without fear. The role of one's self concept in influencing behaviour cannot I be over-estimated, deaf children not being an exception. I A self accepting person knows his weakness. He knows which fault he can alter and learns to live with others. He I feels that despite his limitations he is a person to be ~pproved. He feels that he is doing what can reasonably be expected of him. He approves himself without the feelings that UNIVERSITY OF IBADAN LIBRARY - 40 - he is perfect (Cromberch 1). In contrast a person who questions his own basic worth may try to avoid attention which would expose his weakness. He may avoi d commitment s because tr.ials and failures might confirm his feelings painfully. Another person feeling inferior may spend his time in day dreams. He never learns to live with his real self. One can suspect a sense of inadequacy wherever one observes lack of persistence excessive upset following conflict and neurotic anxiety. The influence of self concept on the achievement of deaf children operates by way of attributional processes. Basic to this operation is a self-consistency hypothesis predicting that individuals interpret events in a way consistent with their self evaluat10.n (Feather,2 Jones 3)• High self concept individuals tend to attribute positive or successful experiences to their own personal characteristics. Low self concept persons con- versely, tend to attribute negative or failure experiences to their own personal inadequacies. In these ways, high self con- cept individuals maintain their positive self-evaluation while those with low self concept maintain their negative self evaluation. L.J. Cromberch. Educational psychology. Harcourt Brace and Com. New York, 1954. 2. N. Feather. Organisation and discrepancy in cognitive structures. Psy. Review, 78, 1971. 3. S. Jones. Self and Interpersonal evaluation: Esteem theories versus consistency theories. Psy. Bull. 79, 1973. UNIVERSITY OF IBADAN LIBRARY - 41 - EMPIRICAL HACKGRUUNV: Language Development in Children: How does a verbally helpless infant develop into an arti- culate adult? A widely held belief is that we are born with vocal equipment and neutral system which gives us the capacity to verbalize. Guess, Sailor, and Baer1 provided a starting point for experimental analysis of language development. Their studies on operant procedures were used to establish produc- tive use of language in severely retarded children who have no language. Recently, Newport and Morgan2 showed that adults can use both prosodic and transformational information to arrive at an understanding of grammatical structure. In their study, they found that adults were able to learn to distinguish grammatical from ungrammatical strings provided that the input data somehow revealed the constituent boundaries in the input strings. Newport et al3 had argued that the pattern of effects and non 1. D. Guesst:W. Sailor and V.M. Baer. To teach language to retarded children. In R.L. Shiefelbusch (Ed.) Language perspective. Macmillan, London, 1974. 2. J.L. Morgan and ~.L. Newport. The role of constituent structure in the induction of an artificial lan- guage. Journal of verbal learning and verbal behaviour 20, 1981. 3. E.L. Newport, H. Gleitman and L.R. Gleitman. Mother I'd rather do it myself: Some effects and non effects of maternal speech style. In C. Snow and C.A. Ferguson (~ds.). Talking in children: Language Input and acquisition. Cambridge University Press, 1977. UNIVERSITY OF IBADAN LIBRARY - '*2 - effects they found in their study is consistent with a nativist model of 1anguage acqui sition according to which universal pro- perties of language are innately specified. Newport et al 1 study suggest procedures that are possibly involved in the child's analysis of her or his input, although the findings are consistent with multiple interpretations. The results of other studies are equivocal with regard to the special importance of 1I·..•.,es/N 0 ques toa"ons H0 ff (u0 l0.nsberg 2 foun d for examp 1eo, f 22 2uT~- year olds that the frequency of some wh- questions in their mother's speech predicted what auxilIaries did not. On the other hand, preliminary data analysis suggests that the frequency of Yes/No questions in experimenter-provided input to these children was related to their auxilIary growth (Shatz and Hoff Ginsberg2, Depaulo and BonvillanJ). 1. E.L. Newport, H. Gleitman and L.R. Gleitman. Mother I'd rather do it myselfl some effects and non effects of maternal speech style. In C. Snow and C.A. Ferguson (Eds.) Talking in childrenl Language Input and acquisition. Cambridge University Press, 1977. 2. M. Shatz and H. Ginsberg. Beyond syntaxa The influence of conversational constraints on speech modification. In C. Snow and C.A. Ferguson (Ed.) Talking to childrena Language Input and acquisition. Cambridge University Press, 1977. J. B.M. Depaulo and J.D. Bonvillan. The effect on language development of special characteristics of speech addressed to children. J. of Psy. Research 7. 1978. UNIVERSITY OF IBADAN LIBRARY - ItJ - Another type of developmental analysis that might operate in the child's achievement of syntactic competence, but one that is independent of semantics is 5uygested by work on the acquisition of artificial languages. Morgan and Newport 1 found that adults were able to learn to distinguish grammatical from ungrammatical strings provided that the input data somehow revealed the constituent boundaries in the input string. The source of this information could be semantic. For example, the chil d might derive the const ituent structure of liThe boy rolls the red ball" from real world semantic correlates; that is red ball form a single constituent separate from 'rolls' because the property 'red' is part of the ball in a way that the action of 'rolling' is not. The child may derive constituent structure from non- semantic sources such as pauses and the terminal fall in funda- mental frequency that mark constituent boundaries although the reading of such clues is not necessarily straightforward (Cooper andCooper 2 ). 1. J.L. Morgan and E.L. Newport. The role of constituent structure in the induction of an artificial language. Journal of verbal learning and verbal behaviour 20 1981. 2. W. Cooper. and P. Cooper. J. Syntax and Speech. Harvard University Press, 1980. UNIVERSITY OF IBADAN LIBRARY - 4:4 - Studies of the nature of the dependencies that obtain between properties of the child's input and properties of syntax acquisition are of two major types. Naturalistic studies make use of the naturally occurring variability in the way different mothers talk to their children and look for correlated variability in children's syntax development: Expe- rimental studies explicitly create variability in the input children receive and look for effects of that manipulation. Interpreting the results of both types of studies is complicated because the particular findings that have emerged do not trans- parently reveal the mechanism that produced them and because numerous methodological problems plague this new area of research (Ginsberg and Shatz1). Nonetheless, the research to date suggests certain significant relations between input and syntax acquisition, and these relations have implications for I the nature of the child's contribution. In a naturalistic study, Newport et al2 tape recorded the I utterances of 15 girls (age 12-27 months) and their mothers Ginsberg and M. Shatz. Linguistic Input and the child's acquisition of language. Psychological Bulletin voL, 92, No. 1,1982. 2. Newport, E.L., Gleitman, H. and uleitman, L.R. Mother, I'd rather do it myself: Some effects and noneffect of maternal speech s~yle. In C. Snow and C.A. Ferguson (cds.). Talking in childrenl Language Input and acquisition. Cambridge University Press, 1977. UNIVERSITY OF IBADAN LIBRARY - '*5 - in two sessions of 6 months apart. Correlations were computed between properties of the mother's speech during the first session and the children's growth in language ability between sessions 1 and 2. Because the children were of different ages and because neither variation in maternal speech nor variation in child growth rate is independent of initial age and stage in language development, the child's age and initial level of advancement on the dependent language measure were particular out of each correlation. All findings were validated on split halves of the speech sample. Newport et al1 argued that the pattern of effects and non- effects they found is consistent with a nativist model of lan- guage acquisition according to which universal properties of language are innately specified, and only the acquisition of language-specific properties depends on input. For example, nouns and verbs are generally considered to be linguistic univer- sals, and Newport et al1 found that the children's growth in the number of noun and verb phrases per utterance was unrelated to 1. E.L. Newport, H. Gleitman and L.R. Gleitman. Mother, I'd rather do it myself, Some effects and noneffects of maternal speech style. In C. Snow and C.A. Ferguson (Eds.). Talking in Children: Language Input and acquisition. Cambridge University Press, 1977. UNIVERSITY OF IBADAN LIBRARY - lt6 - any maternal speech variable that they measured. On the other hand, verb auxillaries and noun inflections are not universal - other languages accomplish their work in a variety of different ways (Ginsberg and Shatz1). As Newport et al2 themselves pointed out, however, conclusions drawn from negative findings are tenuous. Some input-output relations probably change over the course of language development, depending both on changes in how the child processes input and where the child's linguistic system is growingo Newport et al's subjects covered an age range of 15 months. Thus, their study could find only depen- dencies that hold across a variety of language levels or are strong enough when they do hold that a few children can carry a significant correlation. Another study that has directly examined the relation bet- ween a wide variety of maternal speech properties and aspects 1. Ginsberg and M. Shat z. Linguistic Input and the Child's acquisition of Language. Psychological Bulletin. vol. 92, No. I, 1982. 2. E.L. Newport, H. Gleitman and L.R. Gleitman. Mother, I'd rather do it myselfl Some effects and noneffects of maternat speech style. In C. Snow and C.A. Ferguson (Eds.). Talking in Childrenl Language Input and acquisition. Cambridge University Press, 1977. UNIVERSITY OF IBADAN LIBRARY - 4,7 - of child language development was conducted by Furrow, Nelson, and Benedict1• Furrow et al claimed that their data suggests an account. of the reI ation between input and acqui sition that is very different from that suggested by the results of Newport et aI's 2 study. Furrow1 subjects were eight mothers and their 18-month-old children. All of the children were at the one- world stage at the start of the study. Because their subjects were equalized by selection, their finding was slightly diffe- rent from previous findings. Furrow et al found that the children's development of language-universal structures, verbs and nouns phrases, was related to properties of maternal speech. Cross J. an a related study found that mothers of linguis- tic sequences expansions of their own previous utterance than do mothers of less advanced speakers. 1. D. Furrow, K. Nelson and H. Benedict. Mothers' speech to children and syntactic development Some simple relations. Journal of child language 6, 1979. 2. E.L. Newport, H.Gle itman and L.R. Glei tman. Mother, I'd rather do it myself: Some effects and non- effects of maternal speech style. In C. Snow & C.A. Furguson (Eds.). Talking in children; Language input and acquisition. Cambridge University Press, 1977. 3. T.G. Cross. Mothers speech and its association with linguistic development of special characteristic of speech addressed to children. J. of Psy. Research 7, 19780 UNIVERSITY OF IBADAN LIBRARY - 48 - Other related findings include Brown'sl and Moerk's2 reports on the more advanced children in their samples as measured by age-related mean length of utterances. More recent enrichment attempts have demonstrated a positive relation bet- ween expansions in input and syntax development. In a series of experiments (Nelson3, Nelson et a14) reported producing specif~c positive effects on the syntactic development of children by prociding them with recasts of their own utterances in experimental settings. Shatz5 investigated whether maternal speech modifications might restrict the variety of possible form-function pairings, thus providing the child with functional correlates of syntax. 1. R. Brown. How shall a thing be called? Psychological Review 65, 1958. 2. E.L. Moerk. Relationship between parental input fre- quencies and children's language acquisition; A reanalysis of Brown's data. Journal of child language, 7, 1980. 3. K.E. Nelson. Facilitating children's syntax acquisition. Developmental Psychology, 13, 1976. 4. K.E. Nelson, G. Carskaddon and J.D. Bonvillian. Syntax acquisition; Impact of experimental variation in adult verbal interaction with the child. Child Development 44, 1973. 5. M. Shatz. How to do things by asking & Form-Function pairings in mothers questions and their relation to children's responses. Child Development 50, 1979. UNIVERSITY OF IBADAN LIBRARY - 4,9 - It has been observed 1.nformally, Shatz 1,an d exper1.- mentally (Bridges2, Garnica) that mothers use more explicit gestures in talking to children than in talking to adults and that the explicitness of the maternal gestures decline with the increasing age of the child. Although no known correlational studies examine the relation of maternal gestures to child 4, language acquisition, Macnamara found that two gestures at least aid comprehension. He found that children under 20 months were able to use line of regard and gesture to inter- pret adult requests, and they were able to make fairly accurate interpretations on this basis when the language of the request was entirely foreign. 1. M. Shatz. On mechanisms of language acquisition& Can features of communicative environment account for development? In L. Gleitman and E. Wanner (Eds.) Language acquisition& The State of the art. Cambridge University Press, New York, 1982. 2. A. Bridges. The role of context and linguistic cues in the language comprehension of pre-school children. Unpublished Ph.D. thesis, University of Bristol, 1977. ). O.K. Garnica. Non-verbal concomitants of language input to children. In N. Waterson and C. Snow (Eds.) The development of communication, Wiley Chichester, 1978. 4,. J. Macnamara. From sign to language. In J. Macnamara (Ed.) Language learning and thought. ACademic Press, N. York, 1977. UNIVERSITY OF IBADAN LIBRARY - 50 - Language Development in Deaf Children The impairment of hearing has apparent significant impact on a child's ability to acquire language based in audition. Numerous studies have shown that hearing impaired children do not show the same level of achievement in language skills (Myklebust 1, Furth2 t Trybus and Buchanan ).t S~mmons 4: klt Stuc ess and Marks 5 t Marshall and ~u~.gley6., Qu~gley and Power 7, Quigley8) as do hearing children. 1. H. Myklebust. The psychology of deafness. Grune and Stratton, New York, 1964:. 2. Furth. A comparison of reading test norms of deaf and hearing children. American Annals of the Deaf, March, 1966. ). R. Trybus and C. Buchanan. Studies in achievement testing of hearing impaired students. Gallandet College, 1971. 4:. A. Simmons. Comparison of written and spoken language for deaf and hearing children at five age levelso Unpublsihed doctoral dissertation. Washington University, 1962. 5. R. Stuckless and C. Mark. Assessment of the written language of deaf students. University of Pittsburgh, 1966. 6. W. Marshall and S. Quiley. Quantitative and qualitative analysis of syntactic structure in the written language of deaf students. Institute for Research on exceptional children, Urbana, 1970. 7. S. Quigley and D. Power. The development of syntactic structures in the language of Deaf Children. lREC, Urbana, 1972. 8. S. Quigley. Syntactic structures in language of deaf children. Urbana Champaign Report, 1976. UNIVERSITY OF IBADAN LIBRARY - 51 - Many linguistsr including Hersov 1,McMahon 2 represented the conversion process in the various approaches in language development among deaf children by postulating a series of transformations. That such representations may be necessary for linguists to describe adult language is one thing and that children or even adult use these representations to produce the utterances they make is quite different claim (Hersov1). A number of experiments in the 1960s resulted in conflicting evidence. At first, there was some support for claiming that one approach or the other had some psychological reality or influence (McMahon2, Mehler), Miller and MCKean4, Savin and Perchonock5}. 1. L.A. Hersov. Language and Language Disorders in Child- hood. Pergamon Press, Oxford, 1980. 2. L.E. McMahon. Grammatical analysis as part of under- standing a sentence. Doctoral thesis, Harvard University, 198). J. J. Mehler. Some effects of grammatical transformations on the recall of English sentences. J. Verb Learn, Verb, Behaviour 2, 196J. 4. G.A. Miller and K.C. McKean. Ghronometric study of some relations between sentences. Quart. J. Exp. Psychol. 16, 1964. 5. H.B. Savin and E. Perchonock. Grammatical structure and immediate recall of English sentences. J. Verb, Learn, Verb, Behaviour 4, 196). UNIVER ITY OF IBADAN LIBRARY - 52 - Later experiments however cast some doubts on this assumption (Fodor and Garrett1, Slobin2, SlobinJl. It is now generally accepted that language achievements are more complex than for- mally believed and that many factors other than .on e approach play a vital part. Hughes 4 made a comparison of verbal conceptualization in deaf children and hearing children. The purpose of the study was to compare the verbal percept concept sorting performance of three groups of deaf children with a group of children with normal hearing. The pupils were tested on the meaning of 241 percept words and were then asked to sort the words they knew into appropriate categories. The hard of hearing children knew the meaning of 16J of the 241 percept words but were able to sort 46 of them 1. Fodor and M. Garrett. Some syntactic determinants of sentential complexity. Perception and Psycho- Physics 2, 1967. 2. D.I. Slobin. Recall of full and Truncated Passive sentences connected discourse. J. Verb Learn Verb Behaviour, 1968. J. D.I. Slobin. Grammatical, Transformations in Adulthood and Childhood. Journal of verbal learning and Verbal Behaviour, 1966. 4. H. Hughes. Assessment of language development among the deaf. Journal of teachers of the Deaf, 1959. UNIVERSITY OF IBADAN LIBRARY - 53 - correctlyo The hearing recognised 2)0 of the 2~1 and were signi- ficantly superior in their ability to sort them correctly. The verbal behaviour of the deaf was more perceptual than conceptual. This study is significant because it suggests that perhaps the methods by which deaf children are taught may emphasise per- ception and knowledge of single words meaning sO that concept formation is inhibited. Myklebust 1 carried out an investigation of language of the deaf by observing the inter-relationship of measures of language abilities and other factors and comparing the read and written language of the deaf and hearing. The following information were f'o un ds (i) Teachers' rating of lip reading ability (ii ) Scores on the "draw-a-man" test The Columbia Vocabulary test (iv) The picture story language test and (v) Teachers' rating on pupils ability to use spoken language. Comparison on all measures were made between the deaf and the hearing on the vocabulary and language tests and between 1. H.M. MyKlebust. Development and Disorders of Written Language. Vol. I, Picture story Language Test. Grune and Stratton, London, 1960. UNIVERSITY OF IBADAN LIBRARY - Sit - the deaf in residential and day' schools. The following findings were madel (i) Children rated as excellent, good or average in lip reading were also the more intelligent. More females than males were found to have excellent, good, average lip reading ability. (iii) The results indicate a definite correlation bet- ween lip reading ability as rated by teachers and reading as well _ between lip reading and ability to use written language. (iv) Females were rated higher than males and day- school students higher than residential students in spOken language. (v) Ratings in spoken language were found to be unrelated to intelligence. (vi) The deaf group was significantly inferior to the hearing on sentence length and syntax; the two measures of language productivity were considered most valid. (vii) The deaf group was significantly inferior to the hearing group (at the one percent level of signi- ficance) • (viii) On comparison between the deaf and hearing on the use of abstract-concrete concepts in a written story, the deaf were inferior at all age. levels. UNIVERSITY OF IBADAN LIBRARY - 55 - Other studies have assessed the relative efficacy of various approaches in effecting differential language related achievement among deaf children (Masdow1, ~uigley2, Vernon and KOh). The natural approach show advantage over other methods. In some studies the natural approach has been compared to home 4: situation. In either, there is improvement (Yule and Berger, Guess et al5, Lovass 6.) 1. K. Meadow. Early Manual Communication in relation to deaf child's intellectual, social and communi- cative functioning. American Annals of the Deaf. Jan. 1968. 2. S. Quigley. Syntactic structures in language of deaf children. Urbana Champaign report, 1976. ). M. Vernon and S. Koh. Early manual communication and deaf children's achievement. American Annals of the Deaf, 1970. 4:. W. Yule and M. Berger. Behaviour Modification principles and speech delay. In the Child with delayed speech, Rutter, M. and Martin, J.A. (Eds.). Clinics Developmental Medicine, No. 4:),Simp. Heinemann, London, 1972. 5. D. Guess, W. Sailor and D.M. Baer. To teach language to retarded children. In language perspectives. Lloyds, L.L. (Ed.). MacMillan, London, 1974:. 6. 0.1. Lo ve s s , The a~tistic child; Language development through Behaviour modification, Wiley, New York, 1974. UNIVERSITY OF IBADAN LIBRARY - 56 - Malouf and Dodd1 demonstrated that imitation and expressions could be used to teach an artificial grammatical rule concerning/ word order. Whitehurst et al2 use selective mOdelling to teach children passive construction at an age when they are very rarely used. Nelson3 in a naturalistic study investigated language development in some selected deaf children. He found that the number of adults the child was exposed to and the number of outings per week both significantly and positively correlated with language development. Interestingly, the correlation with television watching was negative. The evidence suggests that active social inter-changes rather than any particular linguistic style is the most important feature •. Clarke-Stewartls~ findings also indicate that language 1. R.E. Malouf and D.H. Dodd. Role of exposure imitation and expansion in the acquisition of artificial gramma- tical rule. Developmental psychology, 1972. 2. G.J. Whitehurst, M. Ironsmith and M. Goldfein. Selective imitation of the passive construction through modelling. Journal of experimental psychology 17, 197~. 3. K. Nelson. Structure and Strategy in learning to talk. Monogr. Soc. Res. Child development ~~, 1973. ~. K.A. Clarke-stewart. Interactions between mothers and their young children. Characteristics and con- sequencies. Monogr. Soc. Res. Child Development 38 serial No. 153, 1973. U IVERSITY OF IBADAN LIBRARY - 57 - development is positively correlated with material stimulation and responsiveness. Newport et al1 found no consistent relation- ships between the child's language development and the com- plexity or length of the mothers utterances or the amount of repetition. The form of the mother's syntax was associated with some aspects of the child's grammar but not with other features of his language. Brown et al2 in an experimental study of some deaf child- ren compared the effects in language of expansion, modelling and non-verbal play. Modelling proved to be most effective treatment. Young and McConnelJ studied vocabulary retardation in hard of hearing children. They matched 20 hard of hearing with 20 normally hearing on age, race, sex, socio-economic levels and non-verbal intelligence levels as measured by the Raven's pro- 1. E.L. Newport, H. Gleitman and L.R. Gleitman. Mother, I'd rather do it myself& some effects and noneffects of maternal speech style. In C. Snow and C.A. Ferguson (Eds.). Talking in children: Language In~ut and acquisition. Cambridge University Press, 1977. 2. R. Brown and U. Bellugi. Three processes in the ~hild's acquisition of syntax. Harvard educational Review J~, 1969. J. C. Young and F. McConell. Vocabulary Retardation in hard of hearing children. Volta Review 16, 1957. UNIVERSITY OF IBADAN LIBRARY - 58 - gressive matrices. Then the Ammons full Range Vocabulary Test was administered to individual child. The words were presented visually and verbally. The result showed a significant diffe- rence between the groups in favour of the hearing group. No hard of hearing subject received a higher score on the test more than his matched control peer. The hard of hearing were retarded verbally in comparison to their respective intellectual levels. In another related study, Pintner1 measured the language abilities and progress of deaf children. He found that the verbal behaviour of the deaf was more perceptual than conceptual. Modelling: The analysis and modification of children's behaviour in the classroom has become an active area of investigation in recent years. Many studies have shown that disruptive behaviour can be reduced, study behaviour increased, and grades improved by the relatively simple application of behaviour modification techniques (Bailey, Wolf and Phillips2). Most of the techniques 1. P. Pintner. Language abilities and Language progress of deaf children. Volta Review ~5, 19790 2. J.S. Bailey, M.M. Wolf, L.L. Phillips. Home-Based Rein- forcement and the modification of pre-delinquents' classroom behaviour. Journal of Applied Behaviour Analysis J, 1970. UNIVERSITY OF IBADAN LIBRARY - 59 - developed have involved the teacher as the key element in the modification of student behaviour (Hall, Lund, Jackson 1t Thomas, Becker and Armstrong 2 Madsen, Becker and Thomas J ) The above reaffirms that the teacher has been taught how to deliver social reinforcers more efficiently, to ignore inappropriate behaviour, and how to provide other consequences to improve the academic behaviour of.her students (O'Leary, BeCkerlt) • The operant characteristics of modelling have been well 1. R. Hall, D. Lund, D. Jackson. Effects of teacher action on study behaviour. Journal of Applied Behaviour Analysis I, 1968. 2. D. Thomas, W. Becker, M. Armstrong. Production and elimi- nation of disruptive classroom behaviour by systematic varying teachers behaviour. Journal of Applied Behaviour Analysis I, 1968. J. C. Madsen, W. Becker, D. Thomas. Rules, praise and ignoring elements of elementary classroom control. Journal of Applied Behaviour Analysis I, 1968. 4:. K.D. O'Leary and Becker, W.C. Behaviour modification of an adjustment class. A token r-e Ln f oraement pro- gramme. Exceptional children JJ, 1967. UNIVERSITY OF IBADAN LIBRARY - 60 - established (Holland!, Holland2, SChroederJ). As such, modelling is subject to methods of behavioural modifi cation 't h at have proved successful fora wide range of classroom situations. Coupled with the recent success of behavioural modification programme in the classroom (Birnbrauer, Bijou, Wolf and Kidder~, Birnbrauer, Wolf, Kidder and Tague5, Hewett6, Nolen, Kunzelmann 1. J.G. Holland. Techniques for behavioural analysis of human observing. Science, 125, 1957. 2. J.G. Holand. Human vigilance: Science, 128, 1958. J. S.R. Schroeder. Operant control of eye movement during vigilance. Doctoral dissertation, University of Pittsburgh, 1967. ~. J.S. Birnbrauer, S.W. Bijou, M.M. Wolf and J.D. Kidder. Programmed instruction in the classroom. In L. Ullman and L. Krasner (Eds.) Case studies in behaviour modification. Holt, Rinehart and Winston, New York, 1966. 5. J.S. Birnbrauer, M.M. Wolf, J.D. Kidder and C.E. Ta~ue. Classroom behaviour of retarded pupils with token reinforcement. Journal of Experimental Child PSYChology 2, 1965. 6. F.M. Hewett. Education engineering with emotionally disturbed children. Exceptional children. JJ, 1967. ,. UNIVERSITY OF IBADAN LIBRARY - 61 - and Haring1, O'Leary and Becker2 and ValettJ), these experiments > provide a basis for attempts to alter behaviours in the class- room situation. To date, no known behaviour modification research has been reported in Nigeria for classroom average deaf children. How- ever modelling is especially essential to the deaf child's classroom education. This is so because the deaf child is vir- tually cut off from the auditory stimuli surrounding those who hear. If the deaf child does not look directly at the infor- mation-bearing stimulus, he is categorically prevented from acquiring that information. In the classroom situation, the instructional stimuli from the teacher and from fellow students who contribute to the discussion must become the model to imitate. Modelling has been found to be effective strategy that could be used in helping deaf children in language development. 1. P.A. Nolen, H.F. Kunzelmann and Haring, N.G.. Behaviour Modification in a junior high learning disabilities classroom. Exceptional children, 34, 1967. 2. K. O'Leary, W. Becker, M. Evans and R. Sandargas. A token reinforcement programme in a public schoola a replication and systematic analysis. Journal of Applied Behaviour Analysis 2 1969. 3. R. Valett. A social reinforcement technique for class- room management of behaviour disorders. Exceptional Children. JJ, 1966. UNIVERSITY OF IBADAN LIBRARY - 62 - Schumaker et all, Crayer2, GoldsteinJ, HOlman4 and Carnine5 have all shown in their various studies the effectiveness of modelling as a strategy in solving various social problems. The studies of modelling procedures show that providing factual information to teachers about designated behaviour will reliably change their behaviour in the desired direction (Cooper and 'fhornson6). Paloutzian7 had worked with non-imitative children, teaching them social interaction with peers. The children were 1. J. Schumaker and J.A. Sherman. Training Generative Verb Usage by Imitation and reinforcement procedures. Journal of Applied Behaviour Analysis J, 1970. 2. T.L. Crayer. Application of self-modelling procedure to modify inappropriate Behaviour. Behaviour Research and Therapy. vol. 8, 1970. J. A.P. Goldstein. Increasing independence via use of modelling procedures. Journal of educational research vol. 72, No.4, 1980. 4. L.R. Homan. The effect of stimulus presentation mode and cognitive style on sentence recognition memory. J. of educational research, vol. 72, No.4, 1980. D. Carnine. Relationships between stimulus variation and formation of misconception. Journal of edu. Res. vol. 74, No.2, 1980. 6. M.L. Cooper and C.L. Thomson. The experimental modifi- cation of teacher attending behaviour. Journal of Applied Behaviour Analysis J, 1970. 7. R.F. Paloutzian and J. Hasazi. Promotion of Positive social interaction in severely retarded young 'children. American journal of mental deficiency, 1971. UNIVERSITY OF IBADAN LIBRARY - 63 taught to imitate some social interaction behaviours. The researcher reported that the children required only a few training sessions to learn to imitate these complex behaviours. In another study Stromer 1 remediated various letters and number reversal difficulties in children from regUlar and special education classes by modelling correct and incorrect symbol formation, providing differential feedback following correct and incorrect symbol formation. All reversals were vertually eliminated in all cases with follow-up observations indicating enduring effects. Recognising that many children with learning problems have reading comprehension problems, Lahey et al2 developed a behaviour management programme to deal specifically with deficits in reading for comprehension. Some children whose reading com- prehension were two years below their oral reading grade level were provid~d social and tangible reinforcers following correct answers to comprehension questions. Under the new contingency, reading comprehension rose to grade level performance and R. Stromer. Modifying letter and number reversals in elementary school children. Journal of Applied Behaviour Analysis, 1975. 2. B.B. Lahey, M.P. McNees and C.C. Brown. Modification of deficits in reading for com- prehension. Journal of Applied Behaviour Analysis 1973. UNIVERSITY OF IBADAN LIBRARY - 64 - remained there throughout the periods in which consistent rein- forcement was provided. Many researchers have re-emphasized the importance of imitative programme in the general education of the child. Piaget1 had theorized that from the beginning to the final stage of mental development, the child learns to imitate and to respond to people through imitative behaviour. Piaget1 had observed that at a certain stage of develop- ment, the child looks beyond the family for models to imitate. These'observations imply that a strategy such as modelling would be effective in improving the language of the deaf. In related development, Crayer 2 carried out a study and found that modelling improves the self-concept of an individual. He applied self-modelling techniques successfully to accom- plish modification of withdrawal tendencies. The effectiveness of the modelling strategy in improving self-concept was also seen in the work of GOldstein~ who 1. J. Piaget. Psychology of the child. Basic Books Inc. New York, 1969. 2. T.L. Crayer. Application of self-modelling procedure to modify inappropriate Behaviour. Behaviour Research and Therapy vol. 8, 1970. ). Goldstein. Increasing independence via use of modelling procedures. Journal of educational research, vol. 72, No.4, 1980. UNIVERSITY OF IBADAN LIBRARY - 65 - conducted three experiments aimed at increasing independence via use of modelling procedures. In two respective samples of neurotic out-patients and a sample of psychiatric in- patients significant gains in independence emerged in all three investigations. Other studies which involved the use of psychological strategies in solving problems include that of Malin1• He tried to determine the differential effectiveness of modelling in improving the performance of junior high sChool algebra students. The students were instructed to solve problems using various directions of search. Significant differences were noted in the performance of the students. Holman 2 had also studied the effects of stimulus presen- tation mode and cognitive style on sentence recoynition memory. Results showed that verbal recognition memory was sensitive to both cognitive tempo and stimulus presentation mode. Supporting the effectiveness of modelling, PiagetJ had asserted that 1. J.T. Malin. Strategies in mathematical problem-solving: Journal of educational research, vol.7J, No.2, 1979. 2. L.R. Holman. The effect of stimulus presentation mode and cognitive style on sentence recognition memory: Journal of educational research, vol.72, No.4, 1980. J. J. Piaget. Psychology of the child. Basic Books Inc. New York, 1969. UNIVERSITY OF IBADAN LIBRARY - 66 - imitative learning is a very crucial process in mental develop- mente Shaping I The successful application of reinforcement principles to modify the academic and social behaviour of children in the classroom has been demonstrated in a number of recent studies. Wolf, Giles and Hall1 adopting the shaping strategy and using token economy as a reinforcer accelerated achievement in low-achieving fifth and sixth graders. They also found that daily performance depended on relati ve rate of "pay". Hawkins2 modified out',of-seat behaviour in a year old emotionally disturbed boy by training the teacher to avoid talking to the boy when out of his seat and to talk to him more often when he was in his seat. Geller, Johnson and PettonJ demonstrated the efficacy of a simple incentive procedure for prompting seat-belt use that involved the distribution of seat-belt promotion fliers. 1. M.W. Wolf, D.K. Giles and R.V. Hall. Experiments with token reinforcement in a remedial classroom. Behaviour Research and Therapy 6, 1968. 2. R.P. Hawkins. The public school classroom as a behav i our-e I laboratory. American psychological proceedings. Washington, 1967. ). E.S. Geller, R.P. Johnson and S.L. Pelton. Community based interventions for encouraging safety belt use. American journal of Community Psychology, 10, 1982. , UNIVERSITY OF IBADAN LIBRARY - 67 - For example prompts to drivers who stopped at a pedestrian cross walk on a university campus with the contingency (announced on the first flier per driver) that a prize would be awarded to those who collected each of the six different fliers. Of 180 drivers who received two fliers, 17.2% were wearing a lap and or shoulder belt during the first flier receipt, whereas ~2.2% of these same drivers were wearing a seat belt when given a second flier prompt. Only 25 drivers received four or more fliers, but 52% of these drivers were wearing a seat belt upon receiving fourth flier. In a second experiment Geller et al1 demonstrated that a similar prompting and incentive strategy can be applied in a community setting. However, several questions regarding optimal application of prompts and incentives for motivating seat belt use remain, unanswered e.?pecially as regards the use of response-reward contingency. The present study was designed to examine the relative need for a response-reward contingency in ~nglish achievement of deaf children. 1. E.S. Geller, J.G. Casali, R.P. Johnson. Seat-Belt usages A potential target for applied behaviour analysis. Journal of Applied Behaviour Analysis, 13, 1980. UNIVERSITY OF IBADAN LIBRARY - 68 - In another development, Hingtgen and Trost 1 sought to establish co-operative and vocal response in a group of young children diagnosed as schizophrenic. It was expected that the acquisition of these responses would lead to increased freedom of action and to greater acceptance of these children in the natural environment. The investigators worked with four children, who were trained in pairs and alone. Vocal responses were shaped in the morning session for the child alone and cooperative responses in an afternoon session. The cooperative response was shaped using four steps. Firstly, touching was reinforced using the process of succes- sive approximation. Secondly, only physical contact and vocali- zation were rewarded~ Thirdly, touching with both hands, and vocalization were required. And lastly, reinforcement was only given if both children touched each other with both hands and .made a vocal response. The results of this programme were positive in that children who initially showed no tendency towards recognizable speech nor towards peer interaction, learned the rudiments of interpersonal behaviour. 1. J.N. Hingtgen and T. Trost. Intensive Reinforcement of Imitative Behaviour in Mute Autistic Children. American Medical Association, 1967. UNIVERSITY OF IBADAN LIBRARY - 69 - Cruickshank1 had employed shaping (Prompting procedure) in influencing the behaviour of a child with some exceptional characteri st Lcs, The work of Gardner2 is an illustration of a more complex behaviour pattern that was developed by initial reinforcement of less complex segments and gradual integration of these into the desired goal. The behaviour objective was to get a girl to sit at her desk when the work time was announced, attend to instructions provided to her group, and complete the ten perceptual motor tasks presented and bring the completed work to the teacher. The reinforcement procedure was providing the child with a 'smiling face' sticker on completed work, and social reinforcement of 'praise' as well as getting the child to engage in some activities such as listening to the music, looking at a slige view, taking a pOlaroid picture and finger painting. The result of this treatment was that the child was able to sit at her desk when work time was announced, attended to group instruction, completed the task and took it to the 1. W.M. Cruickshank. The learning environment. In M.W. Cruickshank and D.P. Hallathan (Eds.). Perceptual and learning Disabilities in Children, Syracuse University Press, New York, 1975. 2. W.I. Gardner. Children with learning and Behaviour Problems. Allyn and Bacon Inc. Boston, Masachusetts, 1978. UNIVERSITY OF IBADAN LIBRARY - 70 - teacher's desk. The entire sequence of behaviour was being maintained by the final reinforcing consequences provided by the teacher. Reinforcement was continued for a sufficient period of time to ensure that the behaviour is maintained by more natural reinforcing events. The ultimate goal of shaping is complete rehabilitation. In this study, deaf students, resorting to their lip-reading, sign language skills were trained through shaping and with the use of sign language to carry out desirable behaviours like "wor d usage" "sentence making". Many researchers had employed shaping or allied strategies to improve on the ~nglish achievement for the hearing children and not for the deaf students. Scopes 1 had employed the investigation strategy in teaching some group of children. The principle of investigation concerns a method of learning by discovery. Under this strategy, as in shaping students, were given cues and instructions, and they went on to perform some tasks following a step-by-step procedure. Although, no mention was made of the reinforcement schedule employed, the researcher had pointed out a number of advantages 1. J. Scopes. Teaching Mathematics in the Secondary School. Cambridge University Press, 1973. UNIVERSITY OF IBADAN LIBRARY - 71 - to be derived from an application of this strategy. Witman1 had used positive reinforcement, physical guidance and fading procedures to teach two severely retarded children motor responses to a variety of verbal instructions. The responses of the children to one set of instructions, indicated the baseline condition, while the responses to a second set of instructions were used to assess tile generalized effects of training. Results indicated that the subjects showed pronounced increases in instruction following behaviours. The results also showed the applicability of the training procedures for producing and maintaining instruction following behaviours for instructions not directly involved in the treatment. Chadwick2 in his own study clearly showed the effective- ness of shaping on academic performance of under-achieving students. The research was carried out in an experimental classroom of 25 selected under-achieving students. The effects of reinforcement on three measures of academic performance - percent of time at work, work output minute and accuracy were 1. T.L. Witman. Effect of Reinforcement and Guidance pro- cedures on instruction following behaviour of severely retarded children. Journal of Applied Behaviour Analysis, vol. 4, 1971. 2. B.A. Chadwick. Systematic Reinforcementl Academic Performance of Under-achieving students. Journal of Applied Behaviour Analysis, vol. 4, 1971. UNIVERSITY OF IBADAN LIBRARY - 72 - assessed. Results showed that with combined tangible and social reinforcement, students work-time rate of output per hour and accuracy in all activities sUbstantially increased. A number of researchers, Lowenfeld1, SChol12 have investi- gated and asserted that a behavioural strategy like shaping would improve the intelligence, self-concept, motivation etc. of an individual. Motivation and Language Acquisition, The motive to achieve, whilst having no well-established origins in primary needs, is nevertheless, a useful concept which has some face validity in the class-room. Researchers have been trying to understand nature of achievement motivation for many years now. AusubelJ conceived three component drives (cogni tive, ego _ enhancing and affili ative ) in achievement motivation. Based on this, Bakare4 generated items making up his Academic Need Achievement ~cale. Komolafe5 utilizing the 1. B. Lowenfeld. Creative and Mental Growth. Macmillan, New York, 1967. 2. G.T. Scho 01. Meeting Developmental Needs of the Blind. School of Education, University of Michigan, 1969. J. D.P. Ausubel. Educational Psychologya A cognitive view. Holt, Rinehart and ~inston, New York, 1968. 4. C.G.M. Bakare. Academic need achievement scale and manual. Uepartment of Guidance and Counselling, University of Ibadan, 1976. 5. 0.0. Komolafe. Academic Need Achievement of a group of students in Oyo State, Nigeria. Unpublished M.Ed. Project, Department of Guidance and Counselling, University of Ibadan, 1981. UNIVERSITY OF IBADAN LIBRARY - 73 - scale in a sample of Nigerian adolescents demonstrated signi- ficant positive relationship between drive and academic achi evement. Komolafe 1 also established positive relationship between academic achievement motivation and academic achieve- mente Another direction of exploration arises from the work of McCle- .lland et a.l2• He introduced the term need for achievement. The persistence of both children and adults to master objects and idea would suggest that they have a strong desire to achieve. Whatever the cause, its presence is a constant source of hope and encouragement. McClelland' et al2 adopted' pr-oj e.ct i on ! . techniques to differentiate the levels of need to achieve following from a variety of experimental conditions. In one research there were two stages to the experiment a the first stage consisted of seven pencil-and-paper verbal and motor test; the second stage followed with a test of creative imagination. The results seem to show that the difference between the success and the failure groups is statistically significant. 1. 0.0. Komolafe. Academic Need Achievement of a group of students in Oyo State, Nigeria. Unpublished M.Ed. project. Department of Guidance and Counselling, University of Ibadan, 1981. 2. D.C. McClelland, J.W. Atkinson, R.A. Clark, E.L. Lowell. The Achievement Motive. Appleton-Century-Crofts, New York, 1953. UNIVERSITY OF IBADAN LIBRARY - 74 - Much important recent research, Birney1 points to the paradox in our society, with its over-riding respect for those who think they have failed, especially those who have tasted success. Empirical support has likewise been explored for Veroff's2 autonomous and self-other social orientations of achievement motivation. Ruhland et alJreported that empirical support has been found for these forms of motivation. They also reported that Feld et al4 found moderate relationships between autonomous achievement motivation and scholastic performance for second graders, and between social comparison achievement motivation and sCholastic performance for fifth graders. Thus scholastic performance was differentially predicted by the two types of achievement motivation for younger and older children in elemen- tary school. 1. R.C. Birney, H. Burdick and R.C. Teevan. Fear of Failure, Van Nostrand Reinhold, New York, 1969. 2. J. Veroff. Social comparison and the development of achievement motivation. In C.P. Smith (ed.). Achievement-related motives in children. Russell Sage Foundation, New York, 1969. J. D. Ruhland, M. Gold and F. Feld. Role problems and the relationship of achievement motivation to scho- lastic performance. Journal of educational psychology, 70, 1978. 4. S. Feld, D. Ruhland and M. Gold. Developmental changes in achievement motivation. Merrill-Palmer in press, 1978. UNIVERSITY OF IBADAN LIBRARY - 75 - Self-Concept and Language Acquisitiona Positive and negative self evaluation have their emotional implications in relation to achievement motivation. Weiner et all showed in their study that causal attributions determine affective reactions to achievement outcomes. Ame s2 reported that high self concept children engage in more self congratu- latory behaviour following success than did low self-concept children. This particular study is relevant to the present study. Smith) made a study of 200 physically disabled adolescents attending ordinary schools. He found that those with mild hearing problems had a higher self-concept scores than those with a more severe hearing problem. The severely deaf girls had the lowest self concept scores. Behre4 in a similar situation studied 32 male and 32 female deaf adolescents with the age range of 11 to 16 years. She 1. B. Weiner, I.H. Frieze, A. Kukla, L. Reed, S. Rest and R.M. Rosenbaum. Perceiving the causes of success and failure. General learning press, Morristown, 1971. 2. C. Ames. Children's achievement attributions and self- reinforcementa Effects of self concept and competi- tive rewqrd structure. Journal of educational psychology, 70, 1978. 3. S.J. Smiths. Reaction of self-concept and others to the obviousness and severity of physical disability. Dissertation Abstract, St. Louis University, 1964. 4. A.C. Behre. Effects of Role playing on the self-concept of deaf adolescents. Dissertation ~bstract. Columbia University, 1971. UNIVERSITY OF IBADAN LIBRARY - 76 - divided her subjects into groups A and B and randomly assigned them to experimental and control group. The treatment con- sisted of 2~ sessions of role playing based on incidents relating to problem areas in adolescent life experinece at home, school, neighbourhood. The finding waS that the deaf adolescents had difficulties in attaining realistic self-concept. In a related development, ~lmore1 found in his own study that the stigma of deafness on the deaf subjects affected their self-concept. Gwenth 2 carried ~ study on the self concept and academic ability and academic performance of deaf auolescents in resi- dential and non-rsidential schools. His findings showed that there was higher correlation, in the residential group between sel f concept of academic ability and grade point average. AbosiJ had carried out a comparative study between Nigerian 1. A.P. ~lmore. An inquiry into self-concept of Ueaf Adolescents. DissertatiDn Abstract, University of Minnesota, 1977. 2. J.M. Gwenth. Self concept among deaf adolescent and its relationship to social sensitivity and personality. Dissertation Abstract. Catholic University, 1975. J. c.o. Abosi. Comparative study of self-concept of Nigerian Deaf and Hearing adolescents. Journal of Curriculum Studies, 1985. UNIVERSITY OF IBADAN LIBRARY - 77 - deaf and hearing adolescents. The instrument used in this study was the section A of the Adolescent Personality Data Inventory designed by Akinboye. The result showed that the normal hearing adolescent group had higher score, hence it was con- cluded that normal hearing adolescents have higher concept score than the hearing impaired adolescent. Ames 1 in the previous work had also shown that high self- concept students attributed success outcomes more to their higher ability and engage in more positive self reinforcement following success than low concept students. The implication of this finding in the classroom setting and its interpretation involves explanation about the Causes of achievement outcome that may have important implication for one's subsequent achieve- ment oriented behaviour, self evaluation and interpersonal reIationah.ip, A CONCEPTUAL MOVEL FOR THe. STUDY The following conceptual model explains the process by which a change of behaviour is affected in the study of English language by deaf children. The various methods of teaching English language namely modelling-life model, symbolic model, 1. C. Ames. Children's achievement attributions and self- reinforcement. Effects of self concept and com- petitive reward structure. Journal of educational psychology, 70, 1978. UNIVERSITY OF IBADAN LIBRARY - 78 - self modelling, participants modelling and shaping-cues, prompt., instructions, positive reinforcement are the treatment strategies in this study. They also form the independent variable. This aspect of the mOdel is seen as the stimulus dimension, S. Some personality correlates of the organism such as self- concept, motivation locus of control, attitude, Age, intelli- gence, emotional states, perceptual faculties, Health attributes are considered as the first-order intervening variable or orga- nismic variables. These are fact ors whi ch are expecte d to affect performance in ~nglish language development thus deter- mining the efficacy of the treatment strategies. There is also a second order intervening variables. This considers the envi- ronment and level of interaction during the stUdy. This could affect the outcome of the stUdy. These variables are denoted by '0' residing in the biological system of the organism. The response of dimension 'R' of this mOdel will be the measurable dependent variable namely growth in language ability English language competence, syntactic development. Kanfer and Phillips1 had interpreted the '0' of the S-O-R 1. F.H. Kanfer and J.S. Phillips. Learning foundations of behaviour therapy. UNIVERSITY OF IBADAN LIBRARY - 79 - model as biological state of the organism. Organismic variables include other variables other than biological state (Goldfried and Vava. son 1) • The conceptual model given diagramaticallY in Fi~ I explains how English language could be effectively achieved through modelling and shaping within the limits of the individuals intel- lectual and personal funct ioning. Hypothesesa The following Null hypotheses were tested in the present study. 1. There is no significant difference between the English Achievement of deaf students treated. with modelling programme and deaf students who are not exposed to such treatment. 1. M.R. Goldfried and G.C. Davidson. Clinical Behaviour Therapy. Hol t Rinehart and Winston, New York, 1976. UNIVERSITY OF IBADAN LIBRARY - 80 - Fig. 1. THE CONCEPTUAL MODEL. First - order Second-order D ependent Independent intervening variables in te rve n in g v a r ia b le va riab le s (organismic variables) va r iab le s phenotypic fA M O T I V A T I O N ole; Modeling strategy S E L F C O N C E P T j-J S t im u la t in g E n g l ish t e r a peu t i c — 2 language ----------- 3K----- LOCUS OF CONTROL envir oment competence A T T I T U D E 7 3 C Mr ----------W------ 1 I N T E L L I G E N C E V Shap in g —i EMOTIONAL STAT E LevelI of strategy ft ----- in te r a c tion S y n ta t ic A GE during -----5 t h e r a p y development i PERCEPTUAL FACULTIES V I HEALTH ATTRIBUTES UNIVERSITY OF IBADAN LIBRARY - 81 - 2. There is no significant difference between the English Achievement of deaf students treated wi t h shaping programme and deaf student s who are not exposed to such treatment. J. There is no significant difference between the English Achievement of deaf students treated with modelling programme and those treated with shaping programme. 4. There is no significant difference in the atti- tude of students treated with modelling, shaping programmes and deaf students who are not exposed to such treatment. 5. There is no significant difference in the self concept of deaf students treated with modelling, shaping programmes and deaf students who are not exposed to such treatment. UNIVERSITY OF IBADAN LIBRARY - 82 - CHAPTl!.R TWO DESIGN ANU PROCEDURE Design: A J x J factorial design was used for the study (Fig. 2). This gave nine treatment groups in all. Six of these groups were randomly assigned to treatment groups while the remaining three were assigned to the control groups. The modelling, shaping and control groups were on the rows while the low, average and high levels of achievement constituted the columns. These were labelled from I to IX. Fig. 2 Design of the study Treatment Programme Academic Achievement Levels Low Average High Modelling Group I Group II Group III Shaping Group IV Group V Group VI Control Group VII Group VIII Group IX UNIVERSITY OF IBADAN LIBRARY , - 8) - Subjects& 45 deaf students consisting of males were used in the study. T~ sample was drawn from their natural cluster environ- mentbecause deaf students of the standard required for this study are not many in this country. In short all the form four students available were used. Thus the subjects were drawn from a deaf secondary school unit in Ibadan. Form four was deliberately chosen to allow at least one year follow-up before the students pass out from school. Their age ranged from 17-22 years with a mean of 19.5. Students who had acquired speech before becoming deaf were not involved in the study because such students were likely to have a s~i\Jht advantage over the other subjects in English language. The Academic Achievement Test (Abosi1) scores were used to match the subjedts. The subjects were grouped into low, average and high levels of academic achievement. Thus subjects who scored 55 and above formed the high achievers, 4)-54 average and 42 and below constituted the low achievers. 1. C.O. Abosi. Academic Achievement Test. Department of Guidance and Counselling, University of Ibadan, 1986. UNIVERSITY OF IBADAN LIBRARY , - 84 - The 15 subjects selected for each of low, average and high levels of academic achievement were assigned to three groups by the random blocks technique. These three groups (each containing 5 subjects) were then randomly assigned to treatment programmes as followsl (1) to modelling, (1) to shaping, and (1) to control. Therefore, of the 15 subjects selected for each of low, average and high levels of academic achievement, 5 went to each of modelling, shaping programmes and control. In other words each of the nine groups involved in the study contained 5 subjects (see figure 2). Instrumentsl The following instruments were used in the studYI 1. Academic Achievement Test (Abosi1). 2. Self Concept Scale (Akinboye2). ). Attitudes Towards English (Akinboye). 1. C.O. Abosi. Academic Achievement Test. Department of Guidance and Counselling, University of Ibudan, 1986. 2. J.O. Akinboye. Adolescent Personality Data Inventory (APDI). Marit"imePrinters, Ibadan, 1977. ). J.O. Akinboye. Attitudes Towards English. University of Ibadan, 1974. UNIVERSITY OF IBADAN LIBRARY I - 85 - 1. Academic Achievement Test (AAT) Academic achievement test was constructed for measuring the academic level of the subjects involved in this study by the researcher. The test which consists of 100 items was used in placing the children in the different levels thus low, average, and high achievement levels. Subjects who. scored below ~J on the test formed the low achievers, while subjects who scored between ~J and 5~ formed the average and those who scored 55 and above formed the high level achievers. The psychometric information has been obtained on the instrument. The test has a face validity hence the involvement of some classroom teachers in the selection of the items. The index val idity of the test is 0.75. To determine the internal consistency of the test, the split Half Reliability was computed based on the correlation of the scores of the odd and even components. After adjusting for full length using the Spearman Brown Prophecy Formular, Ir I was found to be 0.82. The test exhibited a coefficient of stability of 0.81 after correlating the scores on two administration with two weeks interval with the same set of students. 2. Adolescent Personality Data Inventory Adolescent personal Uata Inventory (APDI) (Akinboye1) is 1. J.O. Akinboye. Adolescent Personal Data Inventory (APDl). Maritime Press, Ibadan, 1977. UNIVERSITY OF IBADAN LIBRARY - 86 - primarily designated to serve as a battery of non-intellective ability tests. It may be used with other cognitive tests in assessing the characteristic behaviour patterns of adolescents. APDI consists of six sub-scale (A, B, C, D, E, and F) as followSl Self-concept B Study behaviour C Health attributes D Psychopathology E Vocational interest F Questionnaire tapping facts about adolescents' biological characteristics. The present study employed the sub-scale A of the APDI. Sub-scale ,~, is a general self perception scale which may be able to tap academic SOCial, personal and intellectual ability perception of the adolescents. It consists of )0 items. A co- efficient alpha of 0.75 was established for internal consis- tency reliability (Akinboye1,2). Akinboye1 further noted that 1. J.O. Akinboye. Adolescent Personal Data Inventory (APDI)l Users Manual. Maritime Printers, Ibadan, 1985. 2. J.O. Akinboye. Research reports on the adolescent personal data inventory. Paper presented at departmental seminar. Department of Guidance and Counselling, University of Ibadan, 1981. UNIVERSITY OF IBADAN LIBRARY - 87 - apart from the fact that a face validity was assured by the process of item analysis and careful observation of the meaning of the )0 items. factor analytic characteristics were established for the sub-scale. Nine factors were isolated. Of these, 20 items loaded heavily on factor one which accounted for 16.0% of the variance while the other 8 factors accounted for 5~.6%. The sub-scale is scored by subjects rating themselves numerically on a ten-point scale. Ratings on the nine-point scale range from 0 to 8. Total scores on the sub-scale there- fore range from 0 to 2~0. Subjects scores are interpreted according to the following normsl (1) 120 raw score represents just the minimum accept- able self-concept for a psychologically healthy person; (2) 220 raw score represents a high self-concept. (3) Any score below 120 indicates low self-concept. ). Attitude Towards English Scale The scale was constructed, developed and validated by ~inboyel. The scale is based on (Shaw and Wright). The scale was used to discriminate attitudes to reading between different 1. J.O. Akinboye. Study habits modification study attitudes change and academic performance. Unpublished M.Ed. dissertation, University of lbadan, 197~. UNIVERSITY OF IBADAN LIBRARY - 88 - levels. The English attitudes scale (EAS) has a test-retest reliability of O.9~ and high construct validity. PROCEDURE I Heads of schools are somewhat reluctant to allow researchers to carry out studies in their various schools since as they claimed the result of such studies are never utilized. So apart from making sure that the study was carried out in the subjects school environment, permission was obtained from the school before the study com.oenc ed; Deaf children could be unfriendly and suspicious when they are not sure of one's mission. The ex- perimenter, apart from conducting the experiment himself, took time off to familiarize himself with the children - especiallY as regards what they like. This situation helped the experi- menter to determine what the children would like as reinforcers. PRE-TREATMENT ASSESS~~TI Before training started, all subjects were assessed in the following areaSI 1. Academic Achievement Test (Abosi1 Appendix J). 1. C.O. Abosi. Academic Achievement Test. Department of Guidance and Counselling, University of lbadan, 1986. UNIVERSITY OF IBADAN LIBRARY - 89 - 2. Self-Concept by Adolescent Personal Data Inventory (Akinboye1 Appendix 5). 3. Attitude ~cale {Akinboye~ Appendix 4)0 After the ~nglish Achievement Test, the question papers were retrieved from the subjects and they were not given the papers until post-test assessment. The subjects were not also told that it was the same test that would be given again at the end of the treatment, thus reducing to some extent, the sensiti- zation to the criteria tests which might contaminate the effects of the treatment. The subjects were ranked-ordered according to their per- formances on the achievement test. The subjects who scored 55% and above were ranked the high achievers, those who scored bet- ween 43 and 54 formed the average achievers while those·who scored 43% and below formed the low achievers. The subjects were then divided into nine groups thus the low achievers were randomly divided into three groups. The average and high achievers were also randomly divided into three groups each. The balot system was adopted in randomization. 1. J.O. Akinboye. Adolescent Personal Data Inventory (APDI). Maritime Press, Ibadan, 1977. 2. J.O. Akinboye. Study habits modification study attitudes change and aCademic performance. Unpublished M.Ed. dissertation, University of Ibadan, 1974. UNIVERSITY OF IBADAN LIBRARY - 90 - The resulting nine group5were again randomly assigned to the different methods for the different levelo The random method of selection was deliberately chosen to ensure that other extraneous variables resulting from dLfferences in £ocio-economicbackground, previous knowledge of English language etc. were brought into control. Means of Communication adopted for the study: This study adopted the sign language and finger spelling aspect, of "total communication". Total Communicationl Total communication traditionally means the use of any mode of communication or combination of modes in establishing a two-way communication system with the deaf. It includes speech, speech reading, audition, finger spelling, sign lan- guage, gestures, pantomimes, reading, writing and drawing. There is undisputable research eviden~~ pointing to the fact that deaf children gain greater improvement educationally, psy- chologically and socially when total communication is used with them, than when any other single mode of communication is employed (Mba 1). Finger Spellingl Finger spelling is a system whereby an individual can represent manually each of the twenty-six letters in the English 1. P.O. Mba (Ed.). Syllabus in total comll1unicationfor the Deaf. NERC, 1978. UNIVERSITY OF IBADAN LIBRARY - 91 - alphabet on a single hand. Finger spelling is thus a kind of writing in the air. Sign Language: Sign language is a language in which what are commonly called gestures do the usual work of words. The sign language and finger spelling were used in teaching ~nglish language to the subjects, employing modelling and shaping techniques with the relevant groups. The technique of dividing the subjects of each group into low achievers, average achievers and high achievers sub-groups was helpful for data analysis, but for purposes of treatment, each group was taught together, differences in level of achievement not withstanding. Different programmes for modelling and shaping were built round relevant sign language and finger spelling. BASELINE: Information collected before the behaviour change inter- vention was implemented is referred to as baseline or pre- intervention data (Walker and Shea 1). Akinboye2 describes 1. J.E. Walker and T.M. Shea. Behaviour modification a practical approach for educators. The C.Vo Mosby Co. Saint Louis, 1976. 2. J.O. Akinboye. Introduction to clinical behaviour therapy in African contexts. Department of Guidance and Counselling, Univer- sity of Ibadan, 1984. UNIVERSITY OF IBADAN LIBRARY - 92 - baseline as the initial repeated measurement of the target behaviour frequency before treatment. Baseline data indicate the natural frequency of the behaviour before it is manipulated in a therapy. The impor- tance of a baseline data in a behaviour modification programme cannot be over-stressed because it provides the foundation on which the behaviour change process is evaluated. The data was also used to determine the effectiveness of the intervention during the evaluation phase of the behaviour change process. Hersen and Barlow 1 have however war.ned that when selecting a baseline, its stability and variability must be carefully examined. This study in appreciation of the warning, used the average or the mean of the baseline scores in plotting the base- line graph. During baseline, data on English achievement was collected for five days. No attempt was made to teach the students. The students were told that the exercise was to help prepare them for their final examination whiCh would come up in the following year. Also to enable them do well in English which many students failed in the last West African School Certificate examinations. Initially the subjects thought the exercise was 1. M. Hersen and D.H. Barlow. Single-case experimental designsl Strategies for studying behaviour change, 1977. UNIVERSITY OF IBADAN LIBRARY - 93 - for screening for those who would go on to form five but after the second day, they became more relaxed and showed more interest in the exercise. The mean for the scores obtained by each group was recorded for the five days espe~ially when it was observed that the response had become stable (see figure 5, 6, 7, 8, 9 and to and tables ta, b, c, 2a, b, c.). UNIVERSITY OF IBADAN LIBRARY Table lA: Baseline Data in English for Modelling group High Achievers DAYS MEAN GRAUE MEAN GRADEBA~ELINE INTERV~TION 1 "6 7 2 6 7 J 7 8 It 6 8 5 8 9 UNIVERSITY OF IBADAN LIBRARY - 95 - .o c - (/) Ul ~10 ~~V' '-9 •., J ~ 8 •.~ . r» u/~' - V " " 7 ..... ~ 6 .,.. •./ ~ 1 ~J " 7' ~ 5 .~-5- 4 3 « 2 . 1 , 12345 12345 Days Days Baseline --- Intervention - , Fig. 5. Achievement of the modeling high achievers group before and during in terven t io n . UNIVERSITY OF IBADAN LIBRARY Table lBI Baseline Data in English for Modelling group Average Archivers DAYS MEAN GRADE MEAN GRADEBASELINE INTEHVENT ION 1 5 5 2 5 7 J 6 8 4: 5 10 5 5 10 UNIVERSITY OF IBADAN LIBRARY - 97 - 10 9 r ~ " 8 JV" 7 ,"/ 6 oJ V'V'\ 5 .•. ~/ I\u I J" " " " " 4 3 2 1 1 2 3 4 5 I 2.3 4 5 Days Days .....:.-Baseline Intervention - Fig. 6. Achievement of the rnodelinq overage achievers group before and during the intervention. UNIVERSITY OF IBADAN LIBRARY Table lea Baseline Data in English for Modelling group Low Achievers DAYS Ml:..AGNRADE MEAN GRADEBASELINE INTERVENTION 1 J 4 2 2 4 J 4 5 4 4 5 5 5 5 UNIVERSITY OF IBADAN LIBRARY - 99 - c .0 U-l Ul ~10 '- c()J. 8 9 7 -c 6 ~ 5 UI rU: U, v, ~ 4 .. /' / .1/ > .~ 3 u<, V '" " ,.. ~ 2 JA <3: 1 1234512345 Days Days - Baseline - Intervention- Fig.7. Achievement of the modeling low achievers group before and during inter- vention. UNIVERSITY OF IBADAN LIBRARY Table 2AJ Baseline Data in English for Shaping group High Achievers DAYS l-lliAGNRADE MEAN GRADEBASELINE INTERVENTION 1 6 6 2 6 6 J 7 7 4: 6 7 5 8 8 UNIVERSITY OF IBADAN LIBRARY - 101 - c .-0 (J) ~ 10 tJl 9 V""''" ~ 8 ,./ Q. 7 ...• / V V".. C ~6 ../ 1,....I ..~ ~I6 " " (Y " "5 ~E 4 > .~ 3 -5 2 « 1 12345 i2345 Days Days -Baseline Intervention- Fig.8-Achi.ev~ment of t he shaping high achievers group before and during intervention. UNIVERSITY OF IBADAN LIBRARY Table 2Ba Baseline Data in English for Shaping group Average Achievers DAYS MEAN GRADE MEAN GRADEBASELINE INTERVENTION "', 1 5 5 2 5 6 J 6 6 4: 5 7 5 5 7 I /I - _ ......, UNIVERSITY OF IBADAN LIBRARY - 10) - c .o- \I) lI) ~ 10 9 ~ 8 ~a. 7 •,..~. __ 6 r"'" ./ ~ 5 .. ~ ..• ../ ~ "- ./ ~ " -n" ~ 4 " .>~ 3 -5 -2 «1 12345 12345 Days Days - Baseline --- Intervention - Fig.9. Achievement of the shaping overoqe achievers group before and during in tervention. UNIVERSITY OF IBADAN LIBRARY -, " Table 2CI Baseline Data in English for Shaping group Low Achievers DAYS Mr:AN GRADE MEAN GRADEBASELINE INTERVENTION 1 J J 2 2 4: J 4: 4: 4: 4: 5 5 5 5 UNIVERSITY OF IBADAN LIBRARY - ;1.05 - -e : " . , c .0- Vl Vl ~ 10 U) 9 &... ~ 80.. 7 ••••• C .6 ~ E 5 vr- . •..1 ,•i... .. ./ V"·4 ~ / •.I>~ If " V" ,.. .~- ..~ /J: a u 2 '"hi " ," AHISOJ'.OF WUSThD Y. _. r"!E.~'1;; ,.)f ~UBJECTS ENGLISli LANGUAGE ACHIEVE.HENT ;:;CCX{f/· bf •• LiJ 0N TREJ\TMENT AND ACADEMIC ACHIF.;V";[Jl~Ij'l' LEVl;,LS. VARIABLE MODELLING HIGH GROUP SHAPING HIGH GROUP t P'- N X SD N X SD , t 5 68.8 9.36 5 66.4 8.45 , .:O.l~ NS ENGLISH MODELLING AVERAGE GROUP SHAPING AVERAGE GROUP N X SD N X SD LANGUAGE 5 70.4 4.32 5 58.8 7.93 6.37 .001 MODELLING LOW GROUP SHAPING LOW GROUP N X SD N X SD 5 46050 16.72 5 52.2 3.96 1.00 NS NS * Not Significant at .05 UNIVERSITY OF IBADAN LIBRARY - 131 - It was also found by a surface observation of the means of the pre-test scores (X - X) and post-test scores (y _ X) and of the adjusted Y- scores (Adjusted Y-X) - (table I) that both the modelling and the shaping procedures improved to some extent the English achievement of the high, average and low ach Le ver-s ; To analyse the data further, t-tests were employed to com- pare the adjusted Y-means of pairs of sub-groups (tables 5 and 6). Tables 5 and 6 indicate the following-reBultsl (a) There was no significant difference between the scores of subjects who were trained under modelling and those trained under shaping. (b) Subjects treated with the modelling programme scored significantly higher than those in the control group (t~3.1Jt df:28, P ~OOl). (c) Subjects trained with the shaping programme per- formed better than those in the control group (t=2.68, dfc28, P<.05). (d) There was no significant difference between the high achievers of the modelling group and the high achievers of the shaping group. (e) The average achievers of the modelling group were superior to the average achievers of shaping group UNIVERSITY OF IBADAN LIBRARY - 132 - in English achievement (' = 6.3, df = 8, p L... .001). (f) There was no significant difference between the low aChievers of the modelling group and the low achievers of the shaping group. UNIVERSITY OF IBADAN LIBRARY - 1JJ - ([) And finally among subjects treated with shaping pro- gramme, the average achievers scored higher than the low achievers (t=7.52, df;:8, P (..001). These results indicate that the effects of the treatment programmes (Modelling and Shaping) on English language develop- ment were mediated by the academic achievement levels of the treated groups. For each of the programmes (modelling and shaping), subjects with high academic achievement ability scored significantly higher than those with low academic achievement abili ty. For subjects in the control group, no mediation effect was observed between the high achievers and low achievers. In testing hypothesis J that there is no significant diffe- rence between the English achievement of deaf students treated with modelling programme and those treated with shaping programme. Table 5 shows no significant difference between the effect of the two programmes, but a closer observation of the adjusted ¥-means of the subjects scores on table J shows that the modelling group has a higher mean than the shaping group. In testing hypothesis ~ that there is no significant diffe- rence in the attitude of students treated with modelling, shaping programmes and the control group; analysis of covariance (table 8) which is robust in nature confirms that both modelling UNIVERSITY OF IBADAN LIBRARY - 134 - and shaping were statistically significant in improving the attitude of the deaf towards English language (F=4.73t df=2/36, p Zo05). Using a t-test to further analyse the differential effectiveness of modelling and shaping in improving the attitude of the deaf towards English, (table 9) indicates the following results' (a) There waS no significant difference in the attitude of the subjects treated with modelling programme and those treated with shaping programmes towards English. (b) Subject treated with the modelling programme scored significantly higher than those in the coutrol group (t= 3.6]" dl=2ut p ~.001). (e) Subjects treated with shaping programme scored significantly higher than those in the control group (t=3.59., df=28, P .(.001). (d) The high achievement subjects of the mOdelling group were superior to the high achievement subjects of the shaping group (t=2.31, df••8•, P <.. .05). (e) There was no significant difference in the attitude of the average academic achievement subjects of modelling and shaping groups. respecti vely. ' UNIVERSITY OF IBADAN LIBRARY - 135 - TABL.I~7 & ADJUSTED Y-MEANS OF SUBJECTS ATTITUDES SCORES BASED ON TREAT~NTS AND ACHIEVEMENT ~VELS ROWS· COLUMNS·· ACADEMIC ACH IEVEMENT LEVELS HIGH AVERAGE LOW X-X Y-X N X-X Y-X N X-X Y-X N MODELLING 36.80 47.80 5 4:1.20 4:1.80 5 38.50 4:9.15 5 SHAPING 35.60 39.20 5 35.4:0 4:0.4: 5 4:0.60 44:.00 5 CONTROL 37.60 38.4:0 5 30.60 33.60 5 31.25 35.00 5 • ROWSa TREAT~NTS& Modelling Shaping •• COLUMNS: ACADEMIC ACHIEVEMENT LEVELS High 'Average UNIVERSITY OF IBADAN LIBRARY - 136 - .: TABLE 81 ANALYSIS OF COVARIANCE OF SUBJECTS ATTITUDE SCORES ON TREATM&NTS AND ACHn;V~MENT lliVELS VARIABLE SOURCE S5 DF MS F P ROWS 101.39 2 5.69 4,.73 L... .05 ATTITUDE COLUMNS 14,.31 2 7.15 0.67 (NS) INTERACTION 4,1.23 4, 10.30 0.9 (NS) WITHIN 1828.08 36 10.70 NS :=: Not significant at .05. UNIVERSITY OF IBADAN LIBRARY - 137 - TABLE 9: INTER-TREATl'lI:.:Nb'kf(JUP T-TEST COMPARISON OF ADJUSTEL Y - MEANS OF SuBJECTS ATTITUDE SCORES. VARIABLE MODELLING GROUP CONTROL GROUP t P~ N X SD N X SD 15 47.2 10.9 15 35.8 4.6E 3.67 .001 ATTITUDE SHAPING GROUP CONTROL GROUP N X SD N X SD ~ ~ .- - 15 44.7 -8.26 15 35.8 4.68 3.59 .001 1 .- MODELLING GROUP SHAPING GROUP N j( SD N X SD . 15 47..2 10.9 15 44.7 8.26 1.09 NS NS :: Not Significant at .05 UNIVERSITY OF IBADAN LIBRARY - 138 - TABLE 10: ACHIEVEMENT LEVE1.Sc I I I VAlUABLE MODELLING HIGH GROUP S pt-.H•.APING MIGH GtWUP t N X SD N I II X SD 5 47.8 14.8 5 39.20 12.17 2.3 .05 I--MODELLING AVERAGE GROUP SHAPING AVERAGE GROUP fit . '.; ATTITUDE N X SD N X SD 5 41.8 3.18 5 40.4 3.93 1.2 NS MODELLING LOw GROUP SHAPING LOW GROUP N X SD N X SD 5 49.15 8.83 5 44.00 5.84 1.87 NS I I II NS = Not Significant at .05 UNIVERSITY F IBADAN LIBRARY - lJ9 - (f) There was also no significant difference in the attitude of low academic achievement subjects of modelling group and the low ~cademic achievement subjects of shaping group. Further analysis with t-tests reveal some significant differences in the effects of the programmes (modelling and shaping) on the attitudes of the different academic achievement levels (high, average and low) for each treatment groups. Adjusted Y-means scores of the subjects attitude based on treat- ments and academic achievement levels were compared using the t-test statistics. Table 10 indicates the following resultsl (a) Among subjects treated with mOdelling and shaping pro- grammes the modelling high achievers!scored higher than the Shaping high achievers (t~2.J, df=8, P .05). In testing hypothesis 5 that there is no significant diffe- rence in the self-concept of deaf students treated with modelling, shaping programmes and the control group; table 12 indicates that both modelling and shaping programmes were statistically significant in improving the self-concept of the deaf students (F=7.52', df=2/J6, P L.Ol). UNIVERSITY OF IBADAN LIBRARY - 140 - Using a .t-test to furth~r analyse the differential r effectiveness of modelling and shaping in improving the self- concept of the deaf subjects, Tables 13 and 14 indicate the following results: (a) There was no significant difference in the self- concept of subjects treated with modelling pro- gramme and those treated with shaping programme. (b) Subjects treated with modelling programme scored significantly higher than those in the control group (t=2.08, df=28, P~.05). (c) Also subjects trained with the shaping programme scored higher than those in the control group (t=2.08,df=28, P ~.05). (d) There was no significant difference.in the self- concept of the high academic achievement subjects of modelling group and high academic achievement subjects of shaping group. (e) There was no desirable significant difference in the self-concept of the average academic achieve- ment subjects of the shaping group. UNIVERSITY OF IBADAN LIBRARY - 141 - TABLE 11& ADJUSTED Y-MEANS OF SUBJECTS SELF CONCEPT SCORES BASED ON TREATMENTS AND ACHIEVEMENT LEVELS. ROWS· COLUMNS·· ACADEMIC ACHIEVEMENT LEVELS HIGH AVERAGE LOW X-X Y-X N X-X- Y-X- N X-X- Y-X N MODELLING 15.20 16.60 5 13.00 17.00 5 14.50 15.50 5 SHAPING 15.60 16.60 5 15.60 16.60 5 13.20 10.00 5 CONTROL 16.80 16.80 5 16.60 16.00 5 15.25 14.75 5 ·ROWS: TREATMENTS: Modelling Shaping ··COLUMNSa ACADEMIC ACHIEVEMENT .LEVELS High Average Low UNIVERSITY OF IBADAN LIBRARY - 142 - TABLE 12: ANALYSIS OF COVARIANCE OF SUBJECTS SELF, CONCEPT SCORES ON TREATMENTS AND ACADEMIC ACHIEVEMENT LEVELS. VARIABLES SOURCE . SS DF MS F P ROWS 11.45 2 5.72 7.52 L.. .01 SELF COLUMNS 1.)2 2 0.62 0.87 (NS) CONCEPT INTERACTION 9.88 4 0.47 ).2 (NS) WITHIN 129.91 )6 0.76 NS Not significant at .01. UNIVERSITY OF IBADAN LIBRARY - 143 - TABLE 13: INTEH._'l'REATfc1ENT GROUP T-TrSI ';O;"J'N\l;iON OF Al)JUSTED Y -, MEAN!> OF SUBJECTS SELF CGN :r;PT SCORES. VARIABLE MODELLING GROUP CONTROL GROUP t PI- N X SD N X SD 15 16.46 2.22 15 14.8 2.19 2.08 .05 SELF SHAPING GROUP CONTROL GROUP CONCEPT N X SD N X SD 15 16.43 2.05 15 14.8 2.19 2.08 .05 MODELLING GHOUP SHAPING GROUP N X SD N X SD 15 16.46 2.22 15 16.33 2.05 0.92 NS NS Not Significant at .05 UNIVERSITY OF IBADAN LIBRARY - 144 - TABLE 14: T _ TEST COMPARISON OF' '-!.it.,::.'J'LV Y _ MEANS OF SUBJECTS SELF CONCEPT SCOiU':,s. BA!:>ED0l'J TR~TMENT AND ACADEI-'lIACCHIEVr;l'1ENLTEV.t:;LS. VARIABLE MODELLING HIGH GROUP SHAPING HIGH GROUP t pe:- N X SD N I X SD 5 16.6 1.35 5 16.6 1.35 0.0 NS SELF MODELLING AVERAGE GROUP SHAPING AVERAGE GROUP CONCEPT N X SD N X I SD 5 17.0 1.25 5 16.4 1.95 0.98 NS MODELLING LOW GROUP SHAPING LOW GROUP N ·X SD N X SD 5 15.5 3.25 5 10.0 2.61 2.96 .05 NS = Not Significant at .05 UNIVERSITY OF IBADAN LIBRARY - 1~5 - (f) There was a significant difference in the self concept of the subjects; the low academic achieve- ment subjects of the modelling group were superior to the low academic achievement subjects of the shaping group (t = 2.96, df = 8, P ~.05). UNIVERSITY OF IBADAN LIBRARY - 146 - Although it was found by a surface observation of the means of the pre-test scores (X-X), post-test scores (Y-x), and of the adjusted Y-scores (adjusted Y-X) - (table 11 that both the modelling and shaping procedures improved to_ some extent, the self concept of the subjects, a closer observeration shows that the mOdelling programme had a more positive effect on the self concept of the subjects. Apart from the results obtained from the statistical cal- culation which shows the effectiveness of the modelling and shaping procedures on the four variables used in this study - English, Attitude, Locus of Control and Self Concept, the base- line data graphs (fig. 5, 6, 7, 8, 9 and 10) clearly show improvement in English language achievement of the subjects during intervention. SUMMARY OF RESULTS AND CONCLUSIONS The results and conclusions obtained from the present study have been summarized as followsl MOdelling and shaping programmes had significant effects on subjects English language development. Their effects however, were mediated by academic achievement levels of the subjects involved in the therapy. Across the treatment programmes, UNIVERSITY OF IBADAN LIBRARY - 1~7 - subjects who were trained under modelling programme scored significantly higher than those treated under shaping programme. The high academic achievers scored significantly higher than the low academic achievers. There was no change in the scores of the control group. ! UNIVERSITY OF IBADAN LIBRARY - 1~8 - CHAPTER FOUR DISCUSSION Efforts are made in this chapter to discuss the findings of the study as they relate to the earlier posed research questions. The peculiarities of this study are highlighted so that readers may interprete the findings within such peculia- rities. The limitations of the study will also be outlined before the actual discussions. This is to enable the reader appreciate the contribution of this study in line with such limitations. The implications of the findings of this study for schools, teachers and further researches will be specified and relevant recommendations made. Peculiarities of the study& A number of studies have been carried out in Europe and America in line with the present study but none of these studies has African background in terms of home and environmental influences. The present study took into consideration the influence of Nigerian culture, including Nigerian attitude towards the hearing impaired. Here in Nigeria, some researchers had however studied the effectiveness of modelling and shaping on some school subjects. Many have also compared Lhe methods in terms of their effective- ness in improving ~hese abilities. But such studies were carried UNIVERSITY OF IBADAN LIBRARY - 1~9 - out with hearing students and not with the deaf. Again even though adequate randomization and necessary experimental controls were adopted in this study, it was not possible to remove inter subjec~ differences such as intellec- tual ability levels, socio-economic background and otlier per- sonality influences. These are normally not reduced by randomi- za~iull, so statistical control wa~ used. If statistical control had any limitations, it was felt that this would be minimal. Inspite of this, it is important to report that statistical control was used to equate factors like differences in intel- lectual ability levels, socio-economic background and other forms of inter subject differences. One area of possible limitation is the fact that the experi- ment was conducted in the open school system. It is possible that routine school procedure would have been a source of dis- traction to the experimental subjects. If such distractors should have effect, it should show on the effect of the programmes on the treated subjects. Possibly, the effect of the programmes wbuld have been more profound if it was conducted in an entirely stimulus environment. Yet another problem that was encountered was how to keep students of different groups (modelling, shaping and control) apart to avoid possible interactions that might prevent the UNIVERSITY OF IBADAN LIBRARY - 150 - differential effects of the methods from being realized. The groups to which the students belong were not considered when placing them in the various classrooms. The precaution taken to avoid contamination of the methods was to teach the groups the same day. While one group was receiving treatment, the rest of the groups were kept under control with the help of the class teachers. Control of extraneous variables could not have been abso- lute in the present study, especially as it was a field experi- ment. Nevertheless, the design and procedure of the study would have minimized contamination by extraneous variables. Discussion on the Findingsl The findings of the present study indicated that the subject treated with modelling and shaping programmes showed significant difference in English language across treatments and academic achievement levels. This therefore means the rejection of hypotheses one and two which state that there is no signifi- cant difference between the English achievement of deaf students treated with modelling and shaping programmes respectively and the control groups. Results of the analysis of covariance showed significant differences in the English language achievement bet- ween the three groups. Further analysis with the t-test statistic revealed that subjects treated with either Modelling or shaping scored significantly higher than the control group. But there UNIVERSITY OF IBADAN LIBRARY - 151 - was no difference between the English language scores of the modelling group and that of the shaping group. The finding that modelling programme had statistically significant effect on English language achievement of secondary school deaf students corroborates the findings of researchers who found that modelling is an effective strategy that could be used in helping deaf children in language development. (Schumaker et al)1. Other researchers with similar findings include crayer2, GoldsteinJ, HOlman~ and Cornine5• Supporting the effectiveness of modelling, Piaget6 had asserted that imitative learning is a very crucial process in mental development. In another study which is in line with the 1. J. Schumaker and J.A. ~herman. Training Generative verb usage by imitation and reinforcement procedune. Journal of Applied Behaviour Analysis J, 1970. 2. T.L. Crayer. Application of self-modelling procedure to modify inappropriate behaviour. Behaviour Research and Therapy vol. 8, 1970. J. A.P. Goldstein. Increasing independence via use of modelling procedures. Journal of educational research vol. 72, No. ~, 1980. ~. L.R. Holman. The effect of stimulus presentation mode and cognitive style on sentence recognition memory. J. of educational research vol. 72, No.~, 1980. 5. D. Carnine. Relationship between stimulus variation and formation of misconception. Journal of educational research, vol. 7~, No.2, 1980. 6. J. Piaget. Psychology of the child. Basic Books Inc., New York, 1969. UNIVERSITY OF IBADAN LIBRARY - 152 - present study, Stromer 1 remedied various letters and number reversal difficulties in children by the modelling techniques. Malouf and Dodd 2 not only demonstrated that imitation and expansion could be used to teach an artificial grammatical rule concerning word order but also showed the effectiveness of modelling. The operant characteristics of modelling have been well established HollandJ, HOlland~, Schroeder5• As such modelling which has proved a successful behaviour modification teChnique in the classroom situations has also corroborated its efficacy in the present study. One explanation for the enhanced English language achieve- ment of the students treated with modelling programme could be that the modelling procedure, through showing students what to 1. R. Stromer. Modifying letter and number reversals in elementary school children. Journal of Applied Behaviour analysis, 1975. 2. R.E. Malouf and D.H. Dodd. Role of exposure, imitation and expansion in the acquisition of artificial grammatical rule. Developmental Psychology, 1972. J. J.G. Holland. Techniques for behavioural analysis of human observing. Science 125, 1957. ~. J.G. Holland. Human Vigilance. Science 128, 1958. 5. S.R. Schroeder. Operant control of eye movement during vigilance. Doctoral dissertation, Univer- sity of Pittsburgh, 1967. UNIVERSITY OF IBADAN LIBRARY - 15J - do by concrete examples and active participation improved the information gathering ability, facilitated comprehension and memory and therefore enhanced the overall ~nglish language acquisition. It is through observational learning-modelling that a student comes to see similarities and differences and understand some cause-effect relationships. Further more the deaf child is virtually cut off from the auditory stimulus surrounding those who hear. If the deaf child does not look directly at the information-bearing stimulus, he is categorically prevented from acquiring that information. In the classroom situation, the instructional stimuli from the teacher and from fellow students who contribute to the dis- cussion usually become the mOdel to imitate. Modelling has therefore been found to be effective strategy for helping deaf children in language development. Another possible reason for improved achievement in English by the deaf students was that they were strongly motivated to learn English during this experiment so as to perform well in their forth-coming General Certifi€ate Examination. Modelling programme improved the attitude of the subjects towards English language. This finding is supported by Scopes1 1. J. Scopes. Teaching Mathematics in the secondary school: Cambridge University Press, 197J. UNIVERSITY OF IBADAN LIBRARY - 154 - studies. Scope 1 discovered that participation in a modelling programme led some secondary school students to drop their negative attitude towards mathematics and therefore achieved. The haunch that satisfaction with school work and favourable attitude towards studying are logically related to scholastic achievement has been extensively investigated in psychological research. The results of some of the studies are relevant to the outcome of the present study. Capella et al2 in a study came with the finding that actual study time e~loyed by a student is important but that the attitudes determine the productivity of that study time. In the same light, LavinJ, Kniveton4 and Malpass5 revealed from their findings that study behaviours and study attitudes each contribute indepen- dently to academic performance. 1. J. Scopes. Teaching Mathematics in the secondary school. Cambridge University Press, 197J. 2. B.J. Capella, M. Wagner, J.A. Kusmier. Relation of study habits and attitudes to academic performance. Psychological Reports, 1982, 50 (2). J. D. Lavin. The prediction of academic performance. Russel Saga Foundation, 1965. 4. B.H. Kniveton. An investigation of the attitudes of adolescents to aspect of their schooling& British Journal of Educational Psychology, 1969, J9. 5. L.F. Malpass. Some relationship between students per- ception of school and their aChievement. Journal of Educational Psychology, 195J, 44 (8). UNIVERSITY OF IBADAN LIBRARY - 155 - .: The traditional principle o£ demonstrating the task to be learnt, including the principle o£ "attitude development" were embeded in the modelling procedure which is there£ore very likely to be e££ective in teaching English and other school subjects. The e££ect o£ modelling on the sel£ concept o£ the subjects was determined. It was found that the programme (modelling) improved the self-concept o£ the dea£ students. This £inding UNIVERSITY OF IBADAN LIBRARY - 156- supported the findings of Crayer 1,Scholl 2 • Crayer had applied self-modelling techniques successfully to accomplish modifi- cation of withdrawal-tendencies. This study also corroborates the finding of GoldsteinJ that modelling was effective in improving the self-concept in an individual. On tne other hand, one reason why modelling improved the self-concept of the treated subjects so quickly might be that in this particular study the observers had confidence in the model's knowledge of sign language which is an important means of communication for the deaf. This was .en ouuh r-e in f'o r-ceoeut; for the students to go ahead and accomplish the tasks and were able to apply the gained confidence to other problems. Generaily, the deaf are more relaxed if they realized that one is quite knowledgeable in their language. 1. T.L. Crayer. Application of self-modelling procedure to modify inappropriate behaviour. Behaviour Research and Therapy, 1970, vol. 8 2. G.T. Scholl. Meeting Developmental Needs of the Blind. School of Bducation, the University of Michigan, 1969. J. A.P. Goldstein. Increasing independence via use of modelling procedures. Journal of Bducational Research, 1980, vol. 92, No.4. UNIVERSITY OF IBADAN LIBRARY - 157 - Hypothesis 2 had specifically stated that there is no significant difference between the ~nglish achievement of deaf students treated with shaping programme and the control group. This hypothesis was rejected. It was found by an analysis of covariance and t-test statistics that the shaping strategy had statistically significant effect in improving the ~nglish language achievement of deaf students. This finding is in agreement with the findings of Wolf, Giles and Hall1 who adopted the shaping strategy and using token-economy as a rein- forcer accelerated achievement in low achieving fifth and sixth graders. Cruickshank's2 work corroborates with this study and the two findings are quite similar. Cruickshank had employed shaping programme in influencing the behaviour of a child with some exceptional characteristics. The study of GardnerJ also supports shaping as an effective strategy that was used to get a girl to sit at her desk when the work time was announced. 1. M.M. Wolf, D.K. Giles and R.V. Hall. Experiments with token reinforcement in a remedial classroom. Behaviour Research and Therapy 6, 1968. 2. W.M. Cruickshank. The learning environment. In M.W. Cruickshank and D.P. Hallathan (Eds.). Perceptual and learning Disabilities in Children. Syracuse University Press, New York, 1975. J. W.I. Gardner. Children with learning and Behaviour Problems. Allyn and Bacon Inc., Boston, 1978. UNIVERSITY OF IBADAN LIBRARY - 158 - Witman1 used positive reinforcement physical guidance and fading procedures to produce pronounced increases in instruc- tion following behaviour in severely retarded children. Witman'sl study is quite in line with the present study. Other findings which corroborate with the present finding include the works of Geller et al2, scopesJ, Hingtgen and Trost 4:. Chadwick5 in his own study clearly showed the effectiveness of shaping on academic performance of under-achieving students. 1. T.L. Witman. Effects of Reinforcement and Guidance pro- cedures on instruction - following Behaviour of severely Retarded children. Journal of Applied Behaviour Analysis 4:, 1971. 2. E.S. Geller, R.P. Johnson and S.L. Pelton. Community based interventions for encouraging safety belt use. American Journal of Community Psychology 10, 1982. J. J. Scopes. Teaching Mathematics in the secondary schools Cambridge University Press, 197J. 4:. J.N. Hingtgen and T. Trost. Intensive Reinforcement of Imitative Behaviour in Mute Autistics Children. American Medical Association, 1967. 5. Chadwick, B.A. Systematic Reinforcement. ACademic Performance of under-achieving student's Journal of Applied Behaviour.Ahalysis. Vol. 4:, 1971. UNIVERSITY OF IBADAN LIBRARY - 159 A good understanding of the shaping process reveals that some of the traditional principles for the teaching of English: the step-by-step principle, the schematic principle and the principle of programming (individualized instructions) are embeded in the shaping strategy. If the traditional principles can produce good results, it is not surprising therefore that shaping is an effective strategy for teaching English, whether to the deaf or hearing students. The child exposed to language by the shaping process has a clear and complete code to follow. Cornett 1 observes that this approach offers fidelity to written code of English that could prove advantageous to development of English. Another explanation for the high achievement in English by deaf students of the shaping group was that the students were highly motivated to the subject. Deaf students in general, live in a world of imagination and guesses; shaping which is a prompting procedure seems to fall in line with their style of life, thus acceptable to them. 1. O. Cornett, N.H. Rey, C. Williams and D.A. Knight. Theoretical model of development of reading in hearing impaired. A paper presented at Gallaudet, 1978. UNIVERSITY OF IBADAN LIBRARY - 160 - Hypothesis )1 That there is no significant difference between the English achievement of deaf students treated with modelling programme and t hose treated wi th shaping was accepted. The two programmes were found to be equally effective. The various research findings which corroborate the effectiveness of modelling and shaping in the present study are quite rele- vant here. The effect of shaping on other varibales (attitude, locus of control and self concept) employed in this study was ascertained. The results obtained from the analysis of covariance and t-test statistics show that shaping improved the attitude of the subjects towards English language. This finding is supported by Scopes 1 studies. Scopes1 discovered that participation in a new behavioural approach led to some secondary school students to drop their native attitude towards mathematics and therefore achieved. The hypothesis that positive attitudinal dimension towards learning and satisfaction with academic environment are positive 1. J. Scopes. Teaching mathematics in the secondary schools. Cambridge University Press, 1973. UNIVERSITY OF IBADAN LIBRARY - 161 - indeces of scholastic attainment has attracted a lot of psy- chological investigations. The outcomes of some of the studies are relevant to the findings of the present study. Capella et all found out in their study that actual study time employed by a student is important but that attitudes determine the productivity of that study time. In the same light, Lavin2, Kniveton3 and MaiPass4 revealed from their studies that study behaviours and study attitudes each contributes independently to academic performance. The traditional principle of progressive learning including the principle of "attitude development" are embeded in the shaping procedure which is therefore very likely to be effective 1. B.J. Capella, M. Wagner and J.~. Kusmiers. Relation of study habits and attitudes to academic performance. Psychological reports, 1982, 50(2). 2. D.Lavin. The prediction of academic performance. Russel Saga Foundation, 1965. 3. B.H. Kniveton. An investigation of the attitudes of adolescents to aspect of their schooling. British Journal of educational psy. 1969, 39. L.F. Malpass. Some relationship ~e~ween students per- ception of school and their achievement. ~ournal of educa~ional psy. 1953, 44 (8). UNIVERSITY OF IBADAN LIBRARY in teaching English and other school subjects. Although the results of analysis of covariance indicated that modelling and shaping programme had significant effect on the attitude of the secondary school deaf students, across treatment programme and academic achievement levels showed varied results. There was no significant difference between the attitude of modelling group and the shaping group. none- theless, the high academic achievers of the mOdelling group were superior to the high academic achievers of the shaping group. No doubt, what an individual sees would have a more positive and a lasting effect on him than what he is told. The effect of shaping on the self-concept of subjects was determined. It was found that the programme (shaping) improved the self-concept of the deaf students. This finding agrees with the findings of Lowenfeld1 and SCholl2, who had investigated and ascertained that a behavioural strategy like 1. B. Lowenfeld. Creative and Mental Growth. Macmillan, New York, 1967. 2. G.T. Scholl. Meeting Developmental Needs of the Blind. School of Education, University of Michigan, 1969. UNIVERSITY OF IBADAN LIBRARY - 161 - shaping improved the intelligence, self-concept, motivation etc. of an individual. The shaping programme encouraged the students to meet challenges and to recognise their capacities and limitations realistically. Success increased their self-esteem and they were motivated to explore further; failure did not lead to depression, the net result enhanced self-concept even within a short period of time. Another reason why shaping improved the self-concept of the treated subjects so quickly might be that'the experimenter combined finger spelling and sign language most effectively in prompting the subjects, so the lessons were progressively presented to them. This new innovation was enough reinforce- ment for students to go ahead and accomplish the tasks and were able to apply the gained confidence to other problems. The study also tried to compare the effect of modelling and shaping programmes on English achievement of deaf students. The analysis of covariance and t-test statistics used in the study showed no significant differences between mOdelling and shaping programmes on the English achievement of the deaf. But closer observation of the table of the adjusted Y-means for both strategies shows that modelling had a slight advantage over UNIVERSITY OF IBADAN LIBRARY 161z - the shaping programme in improving the Lnglish achievement of the deaf. This outcome corroborates the finding of Marlin1 that modelling was superior to shaping in improving the pro- blem solving behaviour of his experimental subjects. Other studies which support the superiority of modelling over shaping includes, Meadow2, Quigley), Vernon and Kohlz• They maintained that mOdelling showed advantage over other methods. A number of reasons could be advanced for this finding. Modelling demonstrates exactly the task to be performed, and the subjects invariably imitated correctly. This probably raised their morale and interest •. Shaping on the other hand, is essentially a prompting and eliciting strategy for evoking new ideas, the group that used it did not perform better than 1. J.T. Malin. Strategies in Mathematical problems- solving. Journal of educational Research, vol. 7), No.2, 1979. 2. K. Meadow. Early manual communication in relation to deaf child's intellectual, social and communicative functioning. American Annals of the Deaf, Jan. 1968. ). S. Quigley. Syntactic structures in language of deaf children. Urbana Champaign Report, 1976. Iz. M. Vernon and S. Koh. Early Manual Communication and Deaf Children's attachment. American Annals of the Deaf, 1970. UNIVERSITY OF IBADAN LIBRARY - 165 - the modelling group. The reason could be that the deaf children might have missed some of the instructions while the modelling group did not. This might be because they observed the model. This was a visual process. In teaching the deaf such little things that could be taken for granted may tilt the balance. IMPLICATION OF THl:;FINVINGS The results of this study have important implications for application in the Nigerian educational settings. It was shown in this study that the academic achievement level could be fostered experimentally in the deaf. In formulating programmes for fostering academic achievement, characteristics of the deaf ,j should be taken into account. For example, it was found in the present study that achievement level had significant effect on English development. Subjects, high in academic achievement scored higher than those low in achievement. This outcome therefore means that it will be more challenging to foster English language in subjects whose academic achievement levels are low. A longer period may be required for the low achievers. The common features between the treatment programme appeared to have been more important than distinguishing features regarding the effects of the programmes on English language UNIVERSITY OF IBADAN LIBRARY - 166 - improvement. These common features centred around goal setting, task performance towards achievement of goals, and self- reinforcement and self-instruction during task performance. It seems that treatment programme incorporating these features will foster or improve English language. The apparent effects of the common features across the various treatment programmes notwithstanding, differential effects were observed across programmes. This means that the distinctive features of the treatment programmes were of importance in fostering English language. It may be necessary to stress these features (modelling and shaping) as specific therapeutic goals. j However, it is of the opinion here that a blend of both the modelling and shaping procedures can produce even better effects. The teacher might start with giving cues and instruc- tions and urge the students to go ahead to perform the first step of the task. But when the first trial has failed, he then demonstrates the task to be learnt. When the first step has been mastered, the teacher goes to the second step using the same technique - shaping followed by modelling. In this way, some of the advantage of shaping and modelling will be realized and retention enhanced. It is obvious that modelling and shaping are just some of the techniques that can be fostered in individuals learners UNIVERSITY OF IBADAN LIBRARY - 167 - in academic settings. It is recommended here that a more com- prehensive study guidance programme that would be most suitable to the Nigerian educational setting should have some guide- post. Among these are Ln davadue Ld za'tLon ; Ueaf sLudents have different programmes of needs, different ability patterns and different methods of learning. To yield best results there- fore, any dynamic psychologi~al programme in Nigeria should be individualized as the student progresses in learning the essential skills. An effective psychological programme should go beyond helping a student discover what is wrong but should include the relevant therapy. SUGGESTIONS FOR FUHTH~H RESEARCH The behavioural techniques employed in the present study are essentially promising for fostering and improving the English language development in clients of varying characteris- tics. The outcome of the present study calls for further research for developing relevant therapies for fostering and improving ~nglish language in subjects whose academic achieve- ments are relatively low. For example extension of treatment duration for subjects with low academic achievement could result to considerably higher improvement in English language UNIVERSITY OF IBADAN LIBRARY performance than observed in the present study. The design of the study may be modified to ascertain the kind of information that subjects can best acquire with each of the strategies (Modelling and Shaping). In other words, did the subjects learn more specific facts or general ideas through the use of the different psychological procedures? The present study was rather detached from the subjects regular academic activities in the school. There is therefore the need to investigate the effectiveness of the modelling and shaping therapies when incorporated into the regular academic activities in the school. 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The alteration of behaviour in a special classroom situation. Journal of the Experimental Analysis of Behavioural J. 1962. UNIVERSITY OF IBADAN LIBRARY - 202~ - APPENDIX I MODELLING TRAINING PROGRAMME I Introduction Language is an auditory based symbol by which we under- stand things and express our understanding to other people. Infact, we need language for communication, self expression, learning and pleasure. The modelling programme is aimed at helping children acquire and improve on the important skills of generating English sentences that they would need as individuals. Under modelling, the task to be learnt is divided into components and arranged in proper sequence. Unit ;n The use of Nouns Unit III The use of Personal Pronouns Unit III I The use of Present Tense Unit IVa The use of Past Tense Unit Va The use of future Tense. The experimenter is the model. The children are to watch the performance of the mod~l very closely, noting the different steps taken by the model and the order in which the steps were taken because they would afterwards be asked to do exactly what the model had done. The model will start with the first UNIVERSITY OF IBADAN LIBRARY - 20J - step, demonstrating what should be done. He will conunent along as he passes from step to step' e. g. "First thing to do is this "(he performs)" then the next is this "(he performs)", and so on. The model will demonstrate number of time, say three times before asking the children to perfo~m. Each session has been divided intol (1) Behavioural Objective&- Where the aim for the session is stated. (2) Teaching Aid& The aids to be used during the session are Iisted. (J) Exposure to Model&- Period when the model demons- trates and the subjects observe. (~) Acquisitionl- When subjects imitate and perform. (5) Reinforcementl- Reinforcement strategy to be used. (6) Performancel- Evaluation strategy used. Teaching deaf children could sometimes be slow because of communication problem. Do not try to go too fast. Each Unit apart from Unit I and V has been divided into two sessions lasting JO minutes a session. Complete the units. If you do not complete the unit, you cannot expect to achieve the full benefit of the material. UNIVERSITY OF IBADAN LIBRARY - 20'* - MOU~LLING TRAINING PROGRAMME (MTP): SES~ION BY SES~ION ORDER OF PROGRAMME SESSION ONE Behavioural Objectivel- At the end of this session, the children will be able to identify nouns in a sentence and correctly use such nouns. Teaching Aids:- Flash cards, pupils, pictures. Exposure To Modell- The experimenter is the model. The class teacher assist while the children observe. Step I: The experimenter signs to the children - "there are three kinds of nouns. Step III Esperimenter writes on the board in table form thusl Common Nouns Proper Nouns Abstract Nouns Names of Object Names of Person/Place Names of ideas in our mind Step 1111 Experimenter now shows some examples of each of the group. Common Nouns Proper Nouns Abstract Nouns Objects names of Persons/Places names of ideas bicycle Dele Ibadan Beauty aeroplane Taiwo Akure honesty boy John Oyo girl Tun de radio Oluchi desk table UNIVERSITY OF IBADAN LIBRARY - 205 - Acquisitionl- Experimenter calls the children one after the other to imitate him by writing on the board under appro- priate column I example of the various types of Nouns e.g. "book", "ruler" under CommOn Nouns. Ogbomosho, Dele, Tunde, Peter etc. under proper Nouns; movement, honesty, pride etc. under Abstract Nouns. Reinforcementl- Reinforce good performance with praises like - "very gOod" clapping of hands; sweets should be given to the best performers. Performancel The children are given take home assignment. SESSION TWO Behavioural Objectivel At the end of this session the children will be able to identify the following personal pronouns (I, you, he, she) in a sentence (ii) Correctly use such pronouns (iii) Associate the pronouns with appropriate nouns. Teaching Aidl Concrete objects, Flash cards, children themselves, class teachers, sign language. Exposure to Modell The experimenter is the model. The class teacher assists while the children observe. The class teacher stands some UNIVERSITY OF IBADAN LIBRARY - 206 - yards away from the experimenter. Step II The experimenter signs "I". Children watch. ~xperi- menter emphasizes the sign. Children watch closely to see the shape of the fingers. "I" is written on the board. Step II: Experimenter points to the class teacher and says "You". Children are encouraged to watch the shape of the mouth of the experimenter. ~xperimenter points to a member of the class and says "You". This is to avoid the children thinking that "You" refers only to the teacher. "You" is now written on the board. Step III: The experimenter exhibits pictures of a girl and a boy on the board. Children watch. Experimenter points to one of the girls in the class and says "She". "She" is written on the board. Experimenter points to the picture of the boy and says "He". ~xperimenter points to one of the boys in 't.he class and says "He". ("He" and "She") are written under relevant picture on the board. Acquisition: The experimenter calls out two children at a time. One acting as the experimenter and the other - the class teacher. The children will now imitate all that the experimenter had demonstrate ("I", "You", "She" and "He"). Theirs exchange positions to make sure each pupil acted as the experimenter. • UNIVERSITY OF IBADAN LIBRARY - 207 - Reinforcement: Praises and c lapping of hands are used to reinforce those who did well. Performance: The subjects are given take-home assigncent. SESSION THREE Behavioural Objective: At the end of this session, the children will be able to identify the following pronouns ('they', 'it', 'we') in a sentence. (ii) Correctly use such pronouns (iii) Associate the pronouns with appropriate nouns. Teaching Aida Picture of an animal, picture of children at play, the teacher, sign language. Exposure to Modell The experimenter is the model. The class teacher assists while the children observe. Step I: The experimenter exhibits a picture of group of children at play on the board and says "they" ("They" wri tten under the picture). Experimenter calls the attention of the class teacher pointing at the children says "They". (.;hildren are strongly advised to watch the shape of the experi- menter's mouth. UNIVERSITY OF IBADAN LIBRARY - 208 - step III Experimenter exhibits a picture of a dog or any other animal on the board, pointing to it and says "it". Write "It" on the board under the picture. Step 1111 Experimenter and the class teacher sit with the children. The experimenter pointing at everybody including himself says "We". Acquisitionl The experimenter calls the children individually to imitate the experimenter. Reinforcement I Praises like "good" "well done" are used to reinforce children who did well. Performancel The subjects submit the previous assignment to the experimenter and are given a take-home assignment II. SESSION FOUR Behavioural Objective& At the end of the session, the subjects will be able to make and identify sentence in present tense using the following pronouns <"I", "You", "He", 'She')o Teaching Aidl The children, Flash cards, class teacher, pictures. Exposure To Modell The experimenter demostrates with the help of class teacher each action verb. UNIVERSITY OF IBADAN LIBRARY - 209 - Step II experimenter tells the teacher "jump". As the teacher jumps, the experimenter says to him "You jump". The experimenter writes this on the board. (Vary the activities with action verbs like (kick, throw, play). Step III Experimenter calls out one of the girls and tells her "jumps", as she jumps, the experimenter says to the class pointing at the girl "she jumps". Write this on the blackboard. Step 1111 Experimenter calls out one of the boys and tells him to "jump". The experimenter says to the class "he jumps". Write "He jumps on the board. Step IVI The eXperimenter jumps himself and says "I jump". This is written on the board. Acquisitionl The experimenter now invites the children one after the other to do exactly what he had demonstrated (III jump", "She jumps", "You jump"). Reinforcement I The children are appropriately reinforced with praises. The names of those who did very well in the last assignment are displayed on the blackboard. Performance I The subjects submit the previous assignment to the experimenter and are given take-home assignment :.1.11. UNIVERSITY OF IBADAN LIBRARY 210 - SESSION l"IVE Behavioural Objectivel At the end of the session, the subjects will be able to make and identify sentences in present tense using the following pronouns (They, We, It). Teaching Aidl Pictures, Flash cards, class teacher, Experi- menter, blackboard. Exposure To Modell The experimenter demonstrates with the hel of the class teacher. Children observe. Step II The experimenter tells the whole class to .stand and jump. As they jump, he tells the class teacher pointing at the children "They jump". Write "they jump" on the board. Display a picture of children at play on the board. The experimenter points at the picture and says to the children "They ~lay". Vary activities - Play, run, rock, laugh etc. Step III Experimenter displays a picture of an animal jumping and says "It jumps". Write on the board "It jumps". Step 1111 The experimenter joins the class with the class teacher. They all jump together. The experimenter says to the children "We jump". "We jump" is written on the board. Sign language for "We" is well demonstrated. UNIVERSITY OF IBADAN LIBRARY - 211 - step IV& Experimenter calls the attention of subjects to the fact that in the present tense, when pronouns like "He", "She", lilt" are used, "s" is added at the end of the verb. Acquisition& The experimenter now calls out the children individually to imitate the model. Other appropriate action verbs are used e.g. clean, wash, sleep, run etc. The experimenter gives command. Reinforcement& Children who did well are appropriately reinforced with praises and clapping of hands. Performance & The subjects submit the previous assignment to the experimenter and are given take home assignment IV. The marked scripts are also given back to the subjects. SESSION SIX Behavioural Objective& At the end of the session, the subjects will be able to identify and make sentences in the past tense using some of the pronouns previously learnt. Teaching Ai d& Pictures, Flash cards, ball, sign language. Exposure To Model& The Experimenter demonstrates to the subjects to imitate. UNIVERSITY OF IBADAN LIBRARY - 212 - step II The experimenter shows a ball to the subjects. He plays it a while and returns to a corner. The experi- menter says to the subjectsl "I played the ball" a few minutes ago. The experimenter writes on the board. Step III The experimenter tells the class teacher to take the ball and play for a while. The experimenter stops him tells him to return the ball. Looking at the teacher, the experimenter saysl "You played the ball" a while ago. This is written on the board. Step 1111 The experimenter calls a girl out and says to her "jump" after jumping for a while he stops her and tells her to go and sit down. Pointing at the girl, the experi- menter tells the rest of class "she jumped a while ago. (vary the activities e.g. kicked, laughed). Write "she jumped" on the board. Step IVI The experimenter calls out a boy and asks him to kick the ball. The boy kicks the ball. The boy returns to his seat. The experimenter now says to class "The boy kicked ball". This is written on the board. Acquisitionl The experimenter gives the children games acti- vities like jumping, throwing, catching, bouncing. They are to imitate the experimenter using pronouns in making relevant sentences in the past tense, e.g. "I jumped", "He bounced" etc. UNIVERSITY OF IBADAN LIBRARY - 213 - Rein forcemen tI Good performance is reinforced with praises like "good", "clap for him", Excellent performance could be given tokens like pencil, erazers. Poor per- formance are encouraged to do better next time. Performance I The subjects submit assignment IV to .he experimenter. The marked scripts are returned to the subjects. The take-home assignment V is given to the subjects. SESSION SEVEN Behavi our alObje ctive I At the end of session, the subjects will be able to identi fy and make sentences in the future tense. Teaching Aidl Class teacher, pupils, Flash cards. Exposure to Modell The experimenter is the model. He demons- trates. The children observe. The teacher assists. Step II The Experimenter asks the class teacher "what will you do when the school closes? Teacher: "I will go home". The experimenter writes "I will go home" on the board. The experimenter says to the teacher "You will go homel" Experimenter writes "You will go home" on the board. Experimenter asks one of the girls "What will you do after school?" The girl says "I will go home after school". Pointing at the girl, the experimenter tells the rest of the class _ "She will UNIVERSITY OF IBADAN LIBRARY - 214 - go home after school". Write this on the board. Step III Using "Tomorrow" as a marker, the experimenter asks the class teacher "where will your pupils go tomorrow?" Teacher: "Tomorrow, they will come to school". This is written on the board. Acquisition: The experimenter now calls out the children in pairs and encourage them to imitate the model. Use questions and answers method, e.g. "where will you go after school?" Will she come to school tomorrow?" Reinforcement I List the subjects names on the board and star names of good performers. Subjects with the highest number of stars will get ice-cream. Perform nce: The subjects are given the marked scripts, the subjects submit finished assignment to the experimenter. They are given take-home assignment. SESSION EIGHT Behavioural Objectives: To drill the children on English sentence making involving Past tense, Present tense, and future tense so that at the end of the session the children will be able to generate English sentence. UNIVERSITY OF IBADAN LIBRARY -- ------ 2{5 - Teaching Aid: Flash cards, pictures, class teacher, pupils themselves, the blackboard. ~xposure to Modell The experimenter is the model, the class teacher assists while the children observe. Step I: ~xperimenter draws a table on the board providing for different tenses that have been taught. Present Tense Past Tense Future Tense Step III Using some of the events that the children know that happened before and that will happen, the experimenter fill the blank spaces. Experimenter cleans the board and says "I clean the board now". "Yesterday, Tunde cle aned the board" pointing at Tunde who must have cleaned the board yesterday. "Tomorrow your teacher will clean the board". Present Tense Past Tense Future Tense Now I clean the Tunde cleaned the The teacher will board board yesterday clean the board tomorrow. Step 1111 Experimenter writes out sentences on the board leaving blank spaces. The experimenter completes the bl ank spaces. UNIVERSITY OF IBADAN LIBRARY - 21~ - (i) Tomorrow the rain fall (ii) Yesterday the football team a match (iii) Baby Eagles Football in China (iv) Our teacher his shirt now but tomorrow he ______ e Acquisition, The experimenter calls out the children one after the other to imitate him by filling the blank spaces using verbs different from the ones used by the experimentere Reinforcement, Good performers are given additional stars on their names. The person with the highest stars gets exercise book. Performance' The subjects are given their marked scripts. They also submit previous assignment to the experimenter for marking. SESSION NINE Session 9 is the termination session for the modelling training programme. It is expected that subjects would have attained mastery of the programme by the end of this session. The experimenter will administer Post-Test at this session. UNIVERSITY OF IBADAN LIBRARY - 217 - APP~NDIX 2 SHAPING TRAINING PHOGRA~ Introduction Language is an auditory based symbol by which we under- stand things and express our understanding to other people. Infact we need language for communication, self expression, learning and pleasure. The shaping programme is aimed at helping children acquire and improve on the important skills of generating English sentences that they would need as individuals. Under shaping, the task to be learnt is divided into components and arranged in proper sequence. Unit II The use of Nouns Unit III The use of Personal Pronouns Unit 1111 The use of present tense Unit IVI The use of past tense Unit VI The use of Future Tense. The experimenter uses cues, prompts and instruction to initiate the children into performing the first-step behaviour. Approximations to the behaviour are continuously, consistently and contingently reinforced until the experimenter is satisfied that the behaViour has been considerably mastered. With further cues and instructions serving as discriminative stimuli, the UNIVERSITY OF IBADAN LIBRARY 21~ subjects are led into attempting the seoond step behaviour. Each time, approximations to the expectant benaviour is reinforced. In this way, progress is successfully made towards the target behaviour. As each level of performance, the experi- menter goes round the class to see the individual performances of the subjects. Poor performances are not reinforced rahter the subjects are encouraged and prompted to perform the desired behaviour. The progrftmme consists of nine sessions. Each session apart from session nine has been divided intoa (1) Behavioural objectivea where the aim for the session is stated. (2) Teaching Aida The aids to be used during the session are listed. (3) Exposure to shapinga Period when experimenter uses cues, prompts, and instruction to initiate the children into performing the desired behaviour. (4) Acquisitiona When subjects perform the desired behaviour without cues and prompts. (5) Reinforcement a Reinforcement strategy to be used. (6) Performance a Evaluation strategy used. Teaching deaf children could sometime be slow because of communication problem. Do not try to go too fast or teach UNIVERSITY OF IBADAN LIBRARY - 219: - too much at a time. Each unit apart from unit I and V has been divided into two sessions lasting 30 minutes a session. Complete the units. If you do not complete the unit, you cannot expect to achieve the full benefit of the programme. UNIVERSITY OF IBADAN LIBRARY 220- SHAPING TRAINING PROGRAMME (STP) SESSION BY SESSION ORDER Of PROGRAMME SESSION ONE Behavioural Objectivel At the end of this session the children will be able to identify nouns in a sentence and correctly use such nouns. Teaching Aidsl Flash cards, Pupils, Pictures. Exposure To Shaping' The experimenter explains that nouns, are names of objects, persons, places and ideas. Step II Experimenter asks children to mention names of objects, persons, places, and ideas. Children must take the question in turn. Step III Experimenter lists all the children responses on the blackboard. Step 1111 Experimenter explains to the children that nouns could be grouped into three. Experimenter draws the table on the board, thusl Cornmon Nouns Proper Nouns Abstract Nouns Names of Names of Name s of ideas in objects persons our mind. UNIVERSITY OF IBADAN LIBRARY - 221 - Step IVa Experimenter calls the children one after the other to choose from list of words already on theboard - one common Noun, one proper Noun and one abstract Noun and place in appropriate column on the board. All attempts are reinforced with - 'good', 'well done', clapping of hand. Where a child confuses the nouns, the experi- mente.r says 'Not quite right', 'Let another child help you' •. Acquisitiona Experimenter calls children one after the other to think of noun and write it on the appropriate column. The noun must not be one of those already on the board. All attempts are reinforced with - 'well done', 'good', 'clap for him/her', 'Oh - not quite but good attempt'. Reinforcementa All good attempts are immediately reinforced with praises and a child who has been consistent in getting correct answers could be reinforced with sweet, ruler, biro. Performance a The children are given take-home assignment. SESSION TWO Behavioural Objectivea At the end of this session, the children will be able to identify the following personal pronouns (I, you, he, she) in a sentence (ii) correctly use such personal pronouns (iii) associate the pronouns with appropriate nouns. UNIVERSITY OF IBADAN LIBRARY - 222- Teaching Aida pictures, Flash cards. Exposure to Shapinga The experimenter explains that pronouns are words which can be used in place of nouns e.g. They, he, it Step II Experimenter displays the following pictures on the bl ackboard. A boy jumping (J) The experimenter standing A girl playing (~) One of the pupils Step III Experimenter asks a pupil pointing at picture (1)1 "ls the person in the picture a boy or a girl?" If the child says "He is a boy", reinforce by saying 'very good' but if the child says 'the person is a boy' Experimenter says 'yes' 'but which other way can we say it?' Continue until a child has used 'He'. Experi- menter explains that a 'boy' is a Noun as previously learnt in session one but when we do not want to use the Noun 'boy' we can use pronoun 'He' in its place. Step 1111 Experimenter asks children to make sentences using 'He' instead of boya (a) He is jumping (b) He is playing etc. Step IVI Experimenter repeats the same process for the girl using 'She' instead of 'He'. UNIVERSITY OF IBADAN LIBRARY - 22"3- Step Va Experimenter points to the picture of himself and asks a pupil "who is this?" If the pupil says "you" He is reinforced with "very gOOd" but if he says "teacher", the experimenter says 'yes', 'but you can say it in another way'. Continue until a pupil says 'you'. Step VIa Experimenter asks children to make sentences des- cribing his activities, e.g. (a) You are laughing (b) You are writing (c) You are sitting. Step VIla Experimenter says to one of the pupils: "Dele tell us the game you like to play" If Dele says "I like football". He is reinforced with "well done". But if he says something else not using "I" continue until a pupil starts the sentence with "I". All the pupils must be given the opportunity to contribute to the exercise. Acquisitiona ~xperimenter calls children one after the other to give example of personal pronoun. All attempts are reinforced with "well done", "very good", "Clap for him/her" UNIVERSITY OF IBADAN LIBRARY - 224 - Reinforcement: All good attempts are immediately with praises and a child who has shown consistency in getting correct answers should be reinforced with sweet, ruler, exercise book. Performance: The children are given take home assignment II while assignment one is returned to the experimenter for marking. SESSION THREE Behavioural Objectivel At the end of this session, the children will be able to identify the following personal pronouns (they, we, it) in a sentence. (ii) Correctly use such personal pronouns (iii) Associate the pronouns with appropriate nouns. Teaching Aid: Pictures, Flash cards, pupils themselves. Exposure to shapingl The experimenter explains that pronouns are words whiCh can be used in place of nouns. Step II Experimenter displays the following pictures on the blackboard. (1) Group of children playing (2) Dog eating (J) The pupils playing. UNIVERSITY OF IBADAN LIBRARY - 225 - step III Experimenter asks a pupil pointing at picture (1) "What are the children in the picture doing?" If the pupil says "They .are playing" Reinforce "very good" but if the child says "The children are playing" Experimenter says 'yes' but which other way can we say it? Continue until a child has used "They". Experi- menter explains that 'children' is a collective noun as previously learnt in session one but when we do not want to use the noun 'children' or 'group of people', we can use pronoun 'they' in its place. step 1111 Experimenter asks the pupils to make sentences using "They" instead of "the children". (a) They are playing (b) They a:e singing. Step IV: Experimenter points to the second picture and asks "what is thi s?" if a child says "Dog", experimenter says 'good' what is the dog doing? If child says the dog is looking; continue until a child says "it is looking". Reinforce the nearer the answer with praises like "very good", "clap for him/her". !)tep V: ~xperimenter asks children to make sentences using 'it' instead of animal or dog• • UNIVERSITY OF IBADAN LIBRARY - 229 - Step VII Experimenter points to the third picture. A picture of the class children and asks who are those? A pupil says "we" Reinforce immedi ately with pr aises like "well done" but if he says something else, continue to prompt until the child says "we". Experimenter explains that "we" is used when one is involved in an action. Step VIII Experimenter asks children to make sentences using 'we'• (a) We run (b) We play. Acquisitionl Experimenter calls children one after the other to think of a personal pr-on oun'