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Dodd, Barbara G.; And Others – Applied Psychological Measurement, 1989
General guidelines are developed to assist practitioners in devising operational computerized adaptive testing systems based on the graded response model. The effects of the following major variables were examined: item pool size; stepsize used along the trait continuum until maximum likelihood estimation could be calculated; and stopping rule…
Descriptors: Adaptive Testing, Computer Assisted Testing, Computer Simulation, Item Banks
Peer reviewed Peer reviewed
Koch, William R.; Dodd, Barbara G. – Educational and Psychological Measurement, 1995
Basic procedures for performing computerized adaptive testing based on the successive intervals (SI) Rasch model were evaluated. The SI model was applied to simulated and real attitude data sets. Item pools as small as 30 items performed well, and the model appeared practical for Likert-type data. (SLD)
Descriptors: Adaptive Testing, Computer Assisted Testing, Item Banks, Item Response Theory