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A Comparison of the Partial Credit and Graded Response Models in Computerized Adaptive Testing.

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De Ayala, R. J.; And Others – 1990

Computerized adaptive testing procedures (CATPs) based on the graded response method (GRM) of F. Samejima (1969) and the partial credit model (PCM) of G. Masters (1982) were developed and compared. Both programs used maximum likelihood estimation of ability, and item selection was conducted on the basis of information. Two simulated data sets, one…

Descriptors: Ability Identification, Adaptive Testing, Comparative Analysis, Computer Assisted Testing

Dichotomous Search Strategies for Computerized Adaptive Testing.

Xiao, Beiling – 1990

Dichotomous search strategies (DSSs) for computerized adaptive testing are similar to golden section search strategies (GSSSs). Each middle point of successive search regions is a testing point. After each item is administered, the subject's obtained score is compared with the expected score at successive testing points. If the subject's obtained…

Descriptors: Ability Identification, Adaptive Testing, Computer Assisted Testing, Equations (Mathematics)