The Partial Credit Model and Null Categories.

Wilson, Mark; Masters, Geoffery N.

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Peer reviewed

ERIC Number: EJ463433

Record Type: Journal

Publication Date: 1993

Pages: N/A

Abstractor: N/A

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ISSN: ISSN-0033-3123

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The Partial Credit Model and Null Categories.

Wilson, Mark; Masters, Geoffery N.

Psychometrika, v58 n1 p87-99 Mar 1993

A strategy is described for dealing with measurement situations in which certain categories of responses are null, that is, persons do not respond in certain categories to certain items. The method is described for the partial credit model while maintaining the integrity of the original response framework. (SLD)

Descriptors: Equations (Mathematics), Estimation (Mathematics), Item Response Theory, Mathematical Models, Maximum Likelihood Statistics, Measurement Techniques, Research Methodology, Responses, Test Items, Testing Problems

Publication Type: Reports - Evaluative; Journal Articles

Education Level: N/A

Audience: N/A

Language: English

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Author Affiliations: N/A