关键期假说.ppt

1、,10.4 Language environment and the critical period hypothesis,Different theories concerning child language acquisition the behaviorist view 行为主义理论 the innatist view 语法积极天生主义理论 the interactionist view 互动主义理论,The behaviorist（行为主义论） Traditional behaviorists view language as behavior and believe that la

2、nguage learning is simply a matter of imitation and habit formation. Imitation Recognition Reinforcement,The innatist view（语法天生主义论） .According to the innatist view of language acquisition, human beings are biologically programmed for language. .The reason why children can master a language is that h

3、uman have innate ability of learning a language, and this ability is determined by genetic factors.,Interactionist view互动主义理论 The interactionist theory emphasizes the importance of the interaction between biological and social (nature and nurture) aspects of language acquisition. Despite the differe

4、nces, one thing is certain is that language environment is essential in providing input for language acquisition, without which language acquisition seems impossible.,Thecritical period hypothesis To acquirelanguageis biologically linked to age. The hypothesis claims that there is an ideal time window to acquire language in a linguistically rich environment, after which furth