Psicothema was founded in Asturias (northern Spain) in 1989, and is published jointly by the Psychology Faculty of the University of Oviedo and the Psychological Association of the Principality of Asturias (Colegio Oficial de Psicología del Principado de Asturias).
We currently publish four issues per year, which accounts for some 100 articles annually. We admit work from both the basic and applied research fields, and from all areas of Psychology, all manuscripts being anonymously reviewed prior to publication.
Psicothema, 2008. Vol. Vol. 20 (nº 3). 497-503
Paula Elosua Oliden
Universidad del País Vasco
Este trabajo presenta una aplicación de un método estadístico que permite incrementar la fiabilidad de las puntuaciones parciales asociadas a un test. Es una estimación Bayes empírica, generalización de la ecuación de Kelley. Las puntuaciones estimadas se apoyan en la información contenida en el resto de escalas parciales que componen el test. El procedimiento es descrito y discutido aplicándolo a un test intencionadamente multidimensional. El incremento en la fiabilidad de las puntuaciones en cada una de las escalas parciales podría considerarse equivalente a la fiabilidad alcanzable alargando la longitud del test en un 58,06%.
An application of the empirical Bayes estimation to improve the reliability of subscores. In this paper, we show a subscore augmentation procedure that improves the reliability of subscales. The approach uses empirical Bayes estimations. This is a generalization of Kelley’s formula. The estimates are based on the information from other related scales on the test. We describe the procedure and we apply it to a multidimensional test. The reliability of the subscores increased, and the improvement could be considered equivalent to a 58.06% increase in the length of the test.
SPANISH
ENGLISH