NCME Instructional Module: Comparison of One-, Two-, and Three-Parameter IRT Models.

Harris, Deborah

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Peer reviewed

ERIC Number: EJ394513

Record Type: Journal

Publication Date: 1989

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NCME Instructional Module: Comparison of One-, Two-, and Three-Parameter IRT Models.

Harris, Deborah

Educational Measurement: Issues and Practice, v8 n1 p35-41 Spr 1989

This instructional module discusses the one-, two-, and three-parameter logistic item response theory (IRT) models. Mathematical formulas are given for each model and they are compared, with figures illustrating the effects of changing parameters. A single data set is used to demonstrate the effects of changing parameter values. (SLD)

Descriptors: Comparative Analysis, Equations (Mathematics), Estimation (Mathematics), Instructional Materials, Latent Trait Theory, Learning Modules, Mathematical Models, Measurement Techniques, Research Methodology

Publication Type: Journal Articles; Reports - Evaluative; Guides - Non-Classroom

Education Level: N/A

Audience: N/A

Language: English

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