Investigating differential item functioning across interaction variables in listening comprehension assessment

IF 2.6 2区 教育学 Q1 EDUCATION & EDUCATIONAL RESEARCH
Vahid Aryadoust , Shangchao Min , Xueliang Chen
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引用次数: 0

Abstract

Differential item functioning (DIF) analysis is essential to ensuring the equity of measurement for different subgroups at the item level and is an integral part of validity. However, existing DIF research often overlooks within-group heterogeneity, commonly assuming that test takers from different subgroups comprise a homogeneous population. This study investigated DIF across gender, academic background, and their interaction in listening comprehension assessment using Rasch measurement. It found that ignoring within-group heterogeneity would lead to the under-detection of DIF, likely due to the cancellation of DIF at broader group levels. In addition, the study is the first to investigate DIF in a linked test, a scenario more prevalent in practical testing. The findings of the study highlight the importance of accounting for within-group heterogeneity in test fairness investigations in language assessment research and point to the potential effect of test linking and equating on DIF analysis and interpretation.

调查听力理解评估中不同交互变量的不同项目功能
差异项目功能(DIF)分析对于确保不同亚群体在项目层面上的测量公平性至关重要,也是效度不可分割的一部分。然而,现有的 DIF 研究往往忽视了组内异质性,通常假设来自不同亚组的应试者构成了一个同质群体。本研究使用 Rasch 测量法调查了听力理解评估中不同性别、学术背景的 DIF 及其交互作用。研究发现,忽略组内异质性会导致 DIF 检测不足,这可能是由于 DIF 在更广泛的组水平上被抵消了。此外,该研究还首次调查了关联测试中的 DIF,这种情况在实际测试中更为普遍。研究结果强调了在语言测评研究中进行测试公平性调查时考虑组内异质性的重要性,并指出了测试链接和等效对 DIF 分析和解释的潜在影响。
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来源期刊
CiteScore
6.90
自引率
6.50%
发文量
90
审稿时长
62 days
期刊介绍: Studies in Educational Evaluation publishes original reports of evaluation studies. Four types of articles are published by the journal: (a) Empirical evaluation studies representing evaluation practice in educational systems around the world; (b) Theoretical reflections and empirical studies related to issues involved in the evaluation of educational programs, educational institutions, educational personnel and student assessment; (c) Articles summarizing the state-of-the-art concerning specific topics in evaluation in general or in a particular country or group of countries; (d) Book reviews and brief abstracts of evaluation studies.
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