Effect of Rasch Calibration on Ability and DIF Estimation in Computer-Adaptive Tests.

Zwick, Rebecca; And Others

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Peer reviewed

ERIC Number: EJ522395

Record Type: Journal

Publication Date: 1995

Pages: N/A

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ISSN: ISSN-0022-0655

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Effect of Rasch Calibration on Ability and DIF Estimation in Computer-Adaptive Tests.

Zwick, Rebecca; And Others

Journal of Educational Measurement, v32 n4 p341-63 Win 1995

In a simulation study of ability and estimation of differential item functioning (DIF) in computerized adaptive tests, Rasch-based DIF statistics were highly correlated with generating DIF, but DIF statistics tended to be slightly smaller than in the three-parameter logistic model analyses. (SLD)

Descriptors: Ability, Adaptive Testing, Computer Assisted Testing, Computer Simulation, Estimation (Mathematics), Item Bias, True Scores

Publication Type: Reports - Evaluative; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

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Authoring Institution: N/A

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Author Affiliations: N/A