A Multidimensional Continuous Response Model for Measuring Unipolar Traits.

ABSTRACT: Unipolar constructs are encountered in a variety of non-cognitive measurement scenarios that include clinical and forensic assessments, symptoms checklists, addictive behaviors, and irrational beliefs among others. Furthermore, Item Response Theory (IRT) models intended for fitting and scoring measures of unipolar constructs, particularly Log-Logistic models, are fully developed at present, but they are limited to unidimensional structures. This paper proposes a novel multidimensional log-logistic IRT model intended for double-bounded continuous response items that measure unipolar constructs. The chosen response format is a natural application, and is increasingly used, in the scenarios for which the model is intended. The proposed model is remarkably simple, has interesting properties an

SUBMITTER: Ferrando PJ 

PROVIDER: S-EPMC12267208 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature