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Differential Item Functioning: Current Issues

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Authors
Park, Gi-Pyo
Issue Date
2005
Publisher
서울대학교 언어교육원
Citation
어학연구, Vol.41 No.4, pp. 949-962
Keywords
test biasdifferential item functioningdifferential test functioning
Abstract
This study describes current issues of differential item functioning (DIF) used by psychometricians and test specialists to identify item fairness across members of different subgroups such as males and females. First, the definition of DIF was discussed, centering on Simpson's paradox and two different types of DIF: uniform DIF and non-uniform DIF. Then, three commonly used DIF detection techniques - the MantelHaenszel method, confirmatory factor analysis (CFA), and the likelihood
ratio (LR) test - were introduced. Third, the relation of DIF to differential test functioning (DTF) was explored with the generation of three research hypotheses based on current empirical studies. Finally, this study was concluded with future research inquiries to be answered.
ISSN
0254-4474
Language
English
URI
https://hdl.handle.net/10371/90806
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Language Education Institute (언어교육원)Language Research (어학연구)Language Research (어학연구) Volume 41 Number 1/4 (2005)
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