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Bayesian Estimation in the Three-Parameter Logistic Model

Published online by Cambridge University Press:  01 January 2025

Hariharan Swaminathan*
Affiliation:
University of Massachusetts
Janice A. Gifford
Affiliation:
Mount Holyoke College
*
Requests for reprints should be sent to H. Swaminathan, School of Education, University of Massachusetts, Amherst, MA 01003.

Abstract

A joint Bayesian estimation procedure for the estimation of parameters in the three-parameter logistic model is developed in this paper. Procedures for specifying prior beliefs for the parameters are given. It is shown through simulation studies that the Bayesian procedure (i) ensures that the estimates stay in the parameter space, and (ii) produces better estimates than the joint maximum likelihood procedure as judged by such criteria as mean squared differences between estimates and true values.

Information

Type
Original Paper
Copyright
Copyright © 1986 The Psychometric Society

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