ERIC Number: EJ596310
Record Type: Journal
Publication Date: 1999
Reference Count: N/A
Reducing Bias in CAT Trait Estimation: A Comparison of Approaches.
Wang, Tianyou; Hanson, Bradley A.; Lau, Che-Ming A.
Applied Psychological Measurement, v23 n3 p263-78 Sep 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 fixed-length tests. (SLD)
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A