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Download full textHambleton, Ronald K.; Traub, Ross E. – 1970
The purpose of this study was to determine the efficiency of the estimates of ability provided by the one-parameter logistic model as compared to the estimates provided by the more general two- and three-parameter models. Several tests were simulated with item parameters meeting the assumptions of either the two- or three-parameter model. For each…
Descriptors: Ability Identification, Data Collection, Models, Scoring
Rizavi, Saba; Way, Walter D.; Lu, Ying; Pitoniak, Mary; Steffen, Manfred – Online Submission, 2004
The purpose of this study was to use realistically simulated data to evaluate various CAT designs for use with the verbal reasoning measure of the Medical College Admissions Test (MCAT). Factors such as item pool depth, content constraints, and item formats often cause repeated adaptive administrations of an item at ability levels that are not…
Descriptors: Test Items, Test Bias, Item Banks, College Admission
