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Kabasakal, Kübra Atalay; Kelecioglu, Hülya – Educational Sciences: Theory and Practice, 2015
This study examines the effect of differential item functioning (DIF) items on test equating through multilevel item response models (MIRMs) and traditional IRMs. The performances of three different equating models were investigated under 24 different simulation conditions, and the variables whose effects were examined included sample size, test…
Descriptors: Test Bias, Equated Scores, Item Response Theory, Simulation