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ERIC Number: EJ563459
Record Type: Journal
Publication Date: 1998
Pages: N/A
Abstractor: N/A
Reference Count: N/A
ISBN: N/A
ISSN: ISSN-0033-3123
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)
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A