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ERIC Number: EJ633934
Record Type: Journal
Publication Date: 2001
Pages: N/A
Abstractor: N/A
Reference Count: N/A
ISSN: ISSN-0013-1644
Group Differences Based on IRT Scores: Does the Model Matter?
DeMars, Christine
Educational and Psychological Measurement, v61 n1 p60-70 Feb 2001
Compared effect sizes based on simulated groups for the one-parameter and three-parameter logistic item response theory (IRT) models. Data fit the three-parameter model much better, but there were only minimal differences between the effect sizes based on different models. (SLD)
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A