{"title":"Investigating differential item functioning across interaction variables in listening comprehension assessment","authors":"Vahid Aryadoust , Shangchao Min , Xueliang Chen","doi":"10.1016/j.stueduc.2024.101322","DOIUrl":null,"url":null,"abstract":"<div><p>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.</p></div>","PeriodicalId":47539,"journal":{"name":"Studies in Educational Evaluation","volume":"80 ","pages":"Article 101322"},"PeriodicalIF":2.6000,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Studies in Educational Evaluation","FirstCategoryId":"95","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0191491X24000014","RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"EDUCATION & EDUCATIONAL RESEARCH","Score":null,"Total":0}
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.
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.