Descriptive and Inferential Procedures for Assessing Differential Item Functioning in Polytomous Items.

Zwick, Rebecca; Thayer, Dorothy T.; Mazzeo, John

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Peer reviewed

ERIC Number: EJ553099

Record Type: Journal

Publication Date: 1997

Pages: N/A

Abstractor: N/A

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ISSN: ISSN-0895-7347

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Descriptive and Inferential Procedures for Assessing Differential Item Functioning in Polytomous Items.

Zwick, Rebecca; Thayer, Dorothy T.; Mazzeo, John

Applied Measurement in Education, v10 n4 p321-44 1997

Differential item functioning (DIF) assessment procedures for items with more than two ordered score categories, referred to as polytomous items, were evaluated. Three descriptive statistics (standardized mean difference and two procedures based on the SIBTEST computer program) and five inferential procedures were used. Conditions under which the various procedures perform best are discussed. (SLD)

Descriptors: Item Bias, Research Methodology, Statistical Inference, Test Construction, Test Items

Publication Type: Journal Articles; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

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