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Direct linkLi, Lanrong; Becker, Betsy Jane – Journal of Educational Measurement, 2021
Differential bundle functioning (DBF) has been proposed to quantify the accumulated amount of differential item functioning (DIF) in an item cluster/bundle (Douglas, Roussos, and Stout). The simultaneous item bias test (SIBTEST, Shealy and Stout) has been used to test for DBF (e.g., Walker, Zhang, and Surber). Research on DBF may have the…
Descriptors: Test Bias, Test Items, Meta Analysis, Effect Size
Koo, Jin; Becker, Betsy Jane; Kim, Young-Suk – Language Testing, 2014
In this study, differential item functioning (DIF) trends were examined for English language learners (ELLs) versus non-ELL students in third and tenth grades on a large-scale reading assessment. To facilitate the analyses, a meta-analytic DIF technique was employed. The results revealed that items requiring knowledge of words and phrases in…
Descriptors: Test Bias, Reading Tests, English Language Learners, Native Speakers
