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Loglinear Multidimensional IRT Models for Polytomously Scored Items

Published online by Cambridge University Press:  01 January 2025

Henk Kelderman*
Affiliation:
University of Twente
Carl P. M. Rijkes
Affiliation:
University of Twente
*
Requests for reprints should be sent to H. Kelderman, Department of Work and Organizational Psychology, Faculty of Psychology and Pedagogics, Vrije Universiteit, De Boelelaan 1081c, NL 1081 HV Amsterdam, THE NETHERLANDS.

Abstract

A loglinear IRT model is proposed that relates polytomously scored item responses to a multidimensional latent space. The analyst may specify a response function for each response, indicating which latent abilities are necessary to arrive at that response. Each item may have a different number of response categories, so that free response items are more easily analyzed. Conditional maximum likelihood estimates are derived and the models may be tested generally or against alternative loglinear IRT models.

Information

Type
Original Paper
Copyright
Copyright © 1994 The Psychometric Society

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