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Adaptive Testing	2
Computer Assisted Testing	2
Estimation (Mathematics)	2
Maximum Likelihood Statistics	2
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Ability	1
Bayesian Statistics	1
Error of Measurement	1
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Applied Psychological…

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Wang, Tianyou	2
Ban, Jae-Chun	1
Hanson, Bradley A.	1
Lau, Che-Ming A.	1
Yi, Qing	1

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Journal Articles	1

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Reducing Bias in CAT Trait Estimation: A Comparison of Approaches.

Peer reviewed

Wang, Tianyou; Hanson, Bradley A.; Lau, Che-Ming A. – Applied Psychological Measurement, 1999

Extended the use of a beta prior in trait estimation to the maximum expected a posteriori (MAP) method of Bayesian estimation. This new method, essentially unbiased MAP, was compared with MAP, essentially unbiased expected a posteriori, weighted likelihood, and maximum-likelihood estimation methods. The new method significantly reduced bias in…

Descriptors: Adaptive Testing, Bayesian Statistics, Computer Assisted Testing, Estimation (Mathematics)

Effects of Scale Transformation and Test Termination Rule on the Precision of Ability Estimates in CAT. ACT Research Report Series.

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Yi, Qing; Wang, Tianyou; Ban, Jae-Chun – 2000

Error indices (bias, standard error of estimation, and root mean square error) obtained on different scales of measurement under different test termination rules in a computerized adaptive test (CAT) context were examined. Four ability estimation methods were studied: (1) maximum likelihood estimation (MLE); (2) weighted likelihood estimation…

Descriptors: Ability, Adaptive Testing, Computer Assisted Testing, Error of Measurement