ERIC Number: EJ779499
Record Type: Journal
Publication Date: 2002
Reference Count: 0
Evaluation of Selection Procedures for Computerized Adaptive Testing with Polytomous Items
Van Rijn, P. W.; Eggen, T. J. H. M.; Hemker, B. T.; Sanders, P. F.
Applied Psychological Measurement, v26 n4 p393-411 2002
In the present study, a procedure that has been used to select dichotomous items in computerized adaptive testing was applied to polytomous items. This procedure was designed to select the item with maximum weighted information. In a simulation study, the item information function was integrated over a fixed interval of ability values and the item with the maximum area was selected. This maximum interval information item selection procedure was compared to a maximum point information item selection procedure. Substantial differences between the two item selection procedures were not found when computerized adaptive tests were evaluated on bias and the root mean square of the ability estimate.
Descriptors: Intervals, Simulation, Adaptive Testing, Computer Assisted Testing, Item Analysis, Test Items
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Publication Type: Journal Articles; Reports - Evaluative
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