基于动态系统理论的自由产出词汇历时发展研究  

A longitudinal study on free productive vocabulary development from the Dynamic Systems Theory perspective

作　　者：郑咏滟[1] 

机构地区：[1]复旦大学

出　　处：《外语教学与研究》2015年第2期276-288,321,共13页Foreign Language Teaching and Research

基　　金：教育部人文社科研究青年基金项目"外语词汇能力与动机自我意识的动态发展研究"(12YJC740150)阶段性成果

摘　　要：本文汇报了一项从动态系统理论角度开展的历时研究。本研究以16名英语专业大一学生一学年期间128篇作文为语料,通过使用移动极值图法、再抽样法、蒙特卡罗模拟、移动相关系数图等动态系统理论特有的分析方法,揭示了学习者自由产出词汇的跳跃式、阶段性和非匀速发展。学习者的词汇丰富性内部不同维度发展并不同步,自由产出词汇量与词汇复杂度、词汇密度与词汇多样性之间互相支持,而词汇复杂度与词汇多样性在不同阶段呈现出支持-竞争关系的转移。这又与学习者所处的不同发展阶段相关。This paper reports a longitudinal study conducted within the framework of Dynamic Systems Theory.We analyzed 128 free compositions produced by 16first-year English major students during an academic year by means of a variety of analysis techniques specific to the Dynamic Systems Theory research(including moving min-max graph,re-sampling,Monte Carlo simulation,moving correlation graph,etc.).It has been found that the learners' L2free productive vocabulary follows a fluctuating,non-linear and staged developmental pattern.Different dimensions of the lexical richness grow asynchronously:supportive relationships are identified between free productive vocabulary size and lexical sophistication,and between lexical density and variation.The relationship between lexical sophistication and variation shows a support-competition shift at different stages,which is also related to individual learners' respective developmental stage.

关 键 词：动态系统理论 自由产出词汇 词汇复杂度 词汇多样性 

分 类 号：H319[语言文字—英语]