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Algorithms2
Ability1
Adaptive Testing1
Computer Assisted Testing1
Equations (Mathematics)1
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Item Response Theory1
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Applied Psychological…2
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Cheng, Philip E.1
Liou, Michelle1
Muraki, Eiji1
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Estimation of Trait Level in Computerized Adaptive Testing.
Peer reviewed Peer reviewed
Cheng, Philip E.; Liou, Michelle – Applied Psychological Measurement, 2000
Reviewed methods of estimating theta suitable for computerized adaptive testing (CAT) and discussed the differences between Fisher and Kullback-Leibler information criteria for selecting items. Examined the accuracy of different CAT algorithms using samples from the National Assessment of Educational Progress. Results show when correcting for…
Descriptors: Ability, Adaptive Testing, Algorithms, Computer Assisted Testing
A Generalized Partial Credit Model: Application of an EM Algorithm.
Peer reviewed Peer reviewed
Muraki, Eiji – Applied Psychological Measurement, 1992
The partial credit model with a varying slope parameter is developed and called the generalized partial credit model (GPCM). Analysis results for simulated data by this and other polytomous item-response models demonstrate that the rating formulation of the GPCM is adaptable to the analysis of polytomous item responses. (SLD)
Descriptors: Algorithms, Equations (Mathematics), Generalization, Item Response Theory