关键期假说实证研究任务书

1. 毕业设计（论文）的内容和要求

改革开放以来，随着我国国际交往深化，国际合作加强，一股英语学习热潮在现代社会兴起，英语教学呈现低龄化趋势。

其理论依据就是儿童比成人习得语言更快更好。

关键期假说便是这一说法的理论解释。

2. 实验内容和要求

本文介绍二语习得以及关键期假说，分析关键期假说的研究价值，论述关键期假说支持者的主要观点和实例研究，介绍抽样调查的研究问题，研究目的，研究方法和研究结果，简析调查结果及其反映的实质，并给出教学建议。

3. 参考文献

Works Cited Birdsong. Introduction: whys and why nots of the Critical Period Hypothesis fror second language. In Birdsong.D, 1-22. Collier V.P. Acquiring a second language for school. Direction in Language and Education. Vol. 1(4), 1995. Curtiss S. Genie: A psycholinguistic study of a modern day wild child. New York: Academic Press, 1977. Fromkin V. and R.Rodman.An Introduction to Language. New York:Holt, Rhinehart and Winston, 1983. Gloud.J.L. and P.Master. Learning by Instinct. Scientific American, 1987,256(1):156-181. Grimshaw.G.M, A.Adelstein, M.P.Bryden, et al. First Language Acquisition in Adolescence: Evidence for a Critical Period for Verbal Language Development. Brain and Language, 1998(3):237-255. Harely B. and W.Wang. Tutorials in Bilingualism: Psycholinguistic Perspectives. New Jersey. Lawrence Erlbaum, 1997. Johnson.J. and E.Newport. Critical Period Effects in Second Language Learning: the Influence of Maturational State on the Acquisition of English as a Second Language. Cognitive Psychology, 1989, 21 (1):21-45.Laren Freeman D and M Long. An Introduction to Second Language Acquisition Research. London Longman,1991. Lenneberg.E, Biological Foundation of Language. New York: Wiley and sons, 1967:12-13. Littlewood.W, Foreign and second language learning. Cambridge University Press,1984. Long.M.H. Maturational constraints on language development. Studies in Second Language Acquisition, 1990,12:251-285 Patkowsky K. The critical age hypothesis and interlanguage phonology. First and Second Language Phonology. San Diego, CA: Singular Publishing Group, 1994,209-21. Penfield W, Roberts L. Speech and Brain Mechanism. New York: Atheneum Press, 1959:1. Pinker.S. The Language Instinct. New York: Harper Perenial, 1995. 陈宝国，彭聃龄:《语言习得的关键期及其对教育的启示》， 心理发展与教育，2001（1）：52-57 . [Chen Baoguo, Peng Danling. CPH of Language Acquisition and its enlightenment to education. Mental development and education, 2001(1):52-57] 辛柯，周淑莉:《年龄因素对二语习得的影响：临界期假说实证》，《外语教学》，4（2006）：80-82 [Xin Ke, Zhou Shuli. Influence of Age Factor on SLA: Empirical Research of CPH. Foreign Language Education 4（2006）：80-82]

4. 毕业设计（论文）计划