The Stability of IRT "b" Values.

Sykes, Robert C.; Fitzpatrick, Anne R.

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Peer reviewed

ERIC Number: EJ452337

Record Type: Journal

Publication Date: 1992

Pages: N/A

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ISSN: ISSN-0022-0655

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The Stability of IRT "b" Values.

Sykes, Robert C.; Fitzpatrick, Anne R.

Journal of Educational Measurement, v29 n3 p201-11 Fall 1992

Explanations for an observed change in Rasch item parameters ("b" values) from consecutive administrations of a professional licensing examination were investigated. Analysis of covariance indicated that the change was not related to item position or type. It is hypothesized that the change is attributable to shifts in curriculum emphasis. (SLD)

Descriptors: Analysis of Covariance, Change, Curriculum, Higher Education, Item Response Theory, Licensing Examinations (Professions), Models, Reliability, Test Content, Test Format

Publication Type: Journal Articles; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

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Author Affiliations: N/A