ERIC Number: EJ720504
Record Type: Journal
Publication Date: 2005-Jun
Pages: 20
Abstractor: Author
ISBN: N/A
ISSN: ISSN-0033-3123
EISSN: N/A
Available Date: N/A
An Item Response Model for Nominal Data Based on the Rising Selection Ratios Criterion
Revuelta, Javier
Psychometrika, v70 n2 p305-324 Jun 2005
Complete response vectors of all answer options in multiple-choice items can be used to estimate ability. The rising selection ratios criterion is necessary for scoring individuals because it implies that estimated ability always increases when the correct alternative is selected. This paper introduces the generalized DLT model, which assumes rising selection ratios and uses three parameters to describe each incorrect alternative. It is shown that the nominal categories and the Thissen and Steinberg model do not meet the criterion. A simulation study on goodness of recovery and an example with real data are also included.
Descriptors: Multiple Choice Tests, Simulation, Item Response Theory, Models, Goodness of Fit, Test Items
Springer, 233 Spring Street, New York, NY 10013. Tel: 212-460-1539; Fax: 212-460-1594.
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: N/A

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