Detection of Differential Item Functioning in the Graded Response Model.

Cohen, Allan S.; And Others

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Peer reviewed

ERIC Number: EJ485766

Record Type: Journal

Publication Date: 1993

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ISSN: ISSN-0146-6216

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Detection of Differential Item Functioning in the Graded Response Model.

Cohen, Allan S.; And Others

Applied Psychological Measurement, v17 n4 p335-50 Dec 1993

Three measures of differential item functioning for the dichotomous response model are extended to include Samejima's graded response model. Two are based on area differences between item true score functions, and one is a chi-square statistic for comparing differences in item parameters. (SLD)

Descriptors: Chi Square, Comparative Analysis, Identification, Item Bias, Item Response Theory, Simulation, Statistical Studies, Test Items, True Scores

Publication Type: Reports - Research; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

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