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French, Brian F.; Finch, W. Holmes – Journal of Educational Measurement, 2010
The purpose of this study was to examine the performance of differential item functioning (DIF) assessment in the presence of a multilevel structure that often underlies data from large-scale testing programs. Analyses were conducted using logistic regression (LR), a popular, flexible, and effective tool for DIF detection. Data were simulated…
Descriptors: Test Bias, Testing Programs, Evaluation, Measurement
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Kim, Jee-Seon – Journal of Educational Measurement, 2006
Simulation and real data studies are used to investigate the value of modeling multiple-choice distractors on item response theory linking. Using the characteristic curve linking procedure for Bock's (1972) nominal response model presented by Kim and Hanson (2002), all-category linking (i.e., a linking based on all category characteristic curves…
Descriptors: Multiple Choice Tests, Test Items, Item Response Theory, Simulation