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A Bayesian approach for fitting a random effect differential item functioning across group units. (English) Zbl 1110.62158

Summary: This study proposed a multilevel logistic regression model to evaluate variation of differential item functioning (DIf). The model accounts for the three level nested structure of the data and combines results of logistic regression analyses to investigate the variation of DIF across level-3 units. A simulation study is presented to assess the adequacy of the proposed model. The parameters of the proposed model were estimated by using a Bayesian approach implemented by WinBUGS 1.4.

MSC:

62P15 Applications of statistics to psychology
62F15 Bayesian inference
65C60 Computational problems in statistics (MSC2010)

Software:

WinBUGS
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