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Download full textMarco, Gary L.; And Others – 1985
Three item response models were evaluated for estimating item parameters and equating test scores. The models, which approximated the traditional three-parameter model, included: (1) the Rasch one-parameter model, operationalized in the BICAL computer program; (2) an approximate three-parameter logistic model based on coarse group data divided…
Descriptors: College Entrance Examinations, Comparative Analysis, Computer Software, Equated Scores
Kingston, Neal; And Others – 1985
A necessary prerequisite to the operational use of item response theory (IRT) in any testing program is the investigation of the feasibility of such an approach. This report presents the results of such research for the Graduate Management Admission Test (GMAT). Despite the fact that GMAT data appear to violate a basic assumption of the…
Descriptors: College Entrance Examinations, Computer Software, Correlation, Equated Scores
