Methodology and Statistics
Tilburg School of Social and Behavioral Sciences
Dr W.H.M. Emons, Prof. J. M. Wicherts & Prof. K. Sijtsma
On June 23rd, 2017, Robert Hillen defended his thesis entitled
Modeling Psychological Attributes: Merits and Drawbacks of Taxometrics and Latent Variable Mixture Models
Latent categories versus latent dimensions
The question whether constructs are dimensions or categories is a long-standing and on-going debate in psychology. As psychological constructs cannot be directly observed, they are commonly measured by means of psychometric models that formalize and analyze the responses to problems, questions, statements, and so on. Many psychometric models and other statistical procedures have been developed over the past century that either assume a dimensional latent variable, a categorical latent variable, or both.