An Item Response Model with Internal Restrictions on Item Difficulty.

Butter, Rene; De Boeck, Paul

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Peer reviewed

ERIC Number: EJ563459

Record Type: Journal

Publication Date: 1998

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ISSN: ISSN-0033-3123

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An Item Response Model with Internal Restrictions on Item Difficulty.

Butter, Rene; De Boeck, Paul

Psychometrika, v63 n1 p47-63 Mar 1998

An item response theory model based on the Rasch model is proposed for composite tasks, those decomposed into subtasks of different kinds. The model, which is illustrated with an application to spelling tasks, constrains the difficulties of the composite tasks to be linear combinations of the difficulties of the subtask items. (SLD)

Descriptors: Difficulty Level, Item Response Theory, Mathematical Models, Spelling, Test Items

Publication Type: Journal Articles; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

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