【作者】 李宁洁；

【导师】 肖云南；

【作者基本信息】 湖南大学 ， 外国语言学及应用语言学， 2008， 硕士

【摘要】 本论文主要包括理论综述和实证研究两部分。理论综述部分主要介绍了项目偏差、项目影响、项目反映理论、项目功能差异的有关概念、目前国内外语言测试性别项目功能差异(DIF)的研究状况以及检测DIF的一些常用方法。在实证研究部分,运用BILOG-MG软件和项目反应理论下的单参数Logistic Model,对2007年度湖南大学大学英语分级测试两套试卷中的50个阅读理解项目(均为二级计分题)做性别DIF分析。本研究中设男生为参照组(reference group),女生为目标组(focus group)。性别DIF检测结果如下:在第一套阅读试题中,共有七个项目有显著性性别DIF,其中三个是明显有利于男生,四个明显有利于女生;另外,三个项目有中性性别DIF;在第二套阅读试题中,共有七个项目有显著性性别差异,其中五个项目是明显有利于男生,两个明显有利于女生;另外,两个项目有中性性别差异。在分析本研究中所有性别DIF项目的特点的前提下,得出本研究中的大多数DIF项目是有利的DIF,只有两套题中的第25个项目和第二套题中的第30个项目是不利的DIF。进而探索了产生性别DIF的原因,并得出如下结论: 1.与社会科学有关的逻辑推理型项目有利于男生;2.与语法或社会生活紧密相关的项目有利于女生; 3.男生和女生在有关生活问题、自然科学问题、或环境问题的项目中的差异并不显著;4.兴趣不同、语言交际能力不同、学习动机不同也可能是产生性别DIF的因素。另外,基于此次性别DIF研究结果,对湖南大学大学英语分级测试未来的题目开发、题库建设提出了建设性意见。更多还原

【Abstract】 This paper includes two sections of theory survey and application study. Theory survey part introduces some concepts relative to Item Bias、Item Impact、Item Response Theory and Differential Item Functioning, the present domestic and overseas research development in gender DIF of language testing, and some ordinary methods for DIF detection. In the application study part, gender DIF analysis based on the two forms of reading comprehension items of College English Placement Test of Hunan University (2007) was conducted using the one-parameter logistic model under IRT. The BILOG-MG software was used for DIF detection in this study. The results of this empirical study are as follows: For the reading comprehension items of Form 1 test, there were seven items demonstrate significant DIF,of which three items were against female students and four items were against male students. And there were three items showing moderate DIF; For the reading comprehension items of Form 2 test, there were seven items showing significant DIF, of which five items were against female students and two items were against male students. And there were two items showing moderate DIF. Most DIF items in this study are manifesting beneficial DIF except item 25 of both forms and item 30 of Form 2 test,which need to be revised or deleted. Possible sources of gender DIF were presented in this study. The results were as follows: 1. Reasoning items related to social sciences are beneficial for male students. 2. Items about grammar or closely related to the daily life are beneficial for female students. 3. Little difference was found between males and females in life and nature of science, or in environmental issues. 4. Interest differences, the difference in language communication ability and learning motivation are also factors that lead to gender DIF. In addition, based on these results, some suggestions were presented for future item development and item bank building for College English Placement Test of Hunan University.更多还原