Autor según el artículo: Ferrando P; Chico E

Departamento: Psicologia

Autor/es de la URV: CHICO LIBRAN, ELISEO / Ferrando Piera, Pere Joan

Palabras clave: Test psicológicos Teoria de respostes als items Statistics Social desirability Scale Reliability Personality Item response theory Extraversion Classical test theory Ability

Resumen: A theoretical advantage of item response theory (IRT) models is that trait estimates based on these models provide more test information than any other type of test score. It is still unclear, however, whether using IRT trait estimates improves external validity results in comparison with the results that can be obtained by using simple raw scores. This paper discusses some methodological results based on the 2-parameter logistic model (2PLM) and is concerned with three issues: first, how validity coefficients based on IRT trait estimates must be interpreted; second, how inferences about these coefficients can be made; and third, which differences in external validity can be expected if the 2PLM is correct for the data and IRT scores are used in place of raw scores. Four empirical examples in the personality domain provided further evidence for the results that can be expected in real research in which the model is, at best, a good approximation to the data. A general result of these examples was that validity coefficients based on IRT scores were similar to those based on raw scores.

Áreas temáticas: Statistics and probability Psychology, experimental Psychology (miscellaneous) Psicología Experimental and cognitive psychology Developmental and educational psychology Ciencias sociales Ciencias humanas Arts and humanities (miscellaneous)

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 0211-2159

Direcció de correo del autor: perejoan.ferrando@urv.cat

Identificador del autor: 0000-0002-3133-5466

Página final: 257

Fecha de alta del registro: 2023-05-20

Volumen de revista: 28

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://www.uv.es/psicologica/articulos2.07/8FERRANDO.pdf

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Psicologica. 28 (2): 237-257

Referencia de l'ítem segons les normes APA: Ferrando P; Chico E (2007). The external validity of scores based on the twoparameter logistic model: Some comparisons between IRT and CTT. Psicologica, 28(2), 237-257

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2007

Página inicial: 237

Tipo de publicación: Journal Publications