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Tijmstra, Jesper

Constant latent odds-ratios models for the analysis of discrete psychological data

Jesper Tijmstra (PhD student)
Department of Methodology and Statistics
Faculty of Social Sciences
Utrecht University
P.O. Box 80140, 3508 TC Utrecht
Phone: +31 30 253 1490 / 4438 (secretary)
E-mail: Jesper Tijmstra

Project: Project financed by Utrecht University
Project running from: 1 September 2008 – 1 March 2013
Supervisors: Prof. dr P.G.M. Van der Heijden, prof. K. Sijtsma, and dr D.J. Hessen

Summary of project

The main objective of this project is developing statistical procedures for Constant Latent Odds-Ratios models (CLORs) for dichotomous item scores. Since under dichotomous CLORs models the total score, i.e., the unweighted sum of the item scores, is a sufficient statistic for the latent variable, sound statistical procedures for estimation and goodness of fit assessment are readily attainable. The development of such procedures will make the CLORs models available for practical use. Furthermore, the characteristic assumption of constant latent odds-ratios will be used to define new models for polytomous item scores.

Date of defence:
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