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Song, Tian – ProQuest LLC, 2010
This study investigates the effect of fitting a unidimensional IRT model to multidimensional data in content-balanced computerized adaptive testing (CAT). Unconstrained CAT with the maximum information item selection method is chosen as the baseline, and the performances of three content balancing procedures, the constrained CAT (CCAT), the…
Descriptors: Adaptive Testing, Difficulty Level, Item Analysis, Item Response Theory