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Psychometric Properties of the Revised Physical and Social Anhedonia Scales in Non-Clinical Young Adults

Published online by Cambridge University Press:  10 January 2013

Eduardo Fonseca-Pedrero*
Affiliation:
Universidad de Oviedo (Spain)
Mercedes Paino
Affiliation:
Universidad de Oviedo (Spain)
Serafín Lemos-Giráldez
Affiliation:
Universidad de Oviedo (Spain)
Eduardo García-Cueto
Affiliation:
Universidad de Oviedo (Spain)
Úrsula Villazón-García
Affiliation:
Universidad de Oviedo (Spain)
Julio Bobes
Affiliation:
Universidad de Oviedo (Spain)
José Muñiz
Affiliation:
Universidad de Oviedo (Spain)
*
Correspondence concerning this article should be addressed to Eduardo Fonseca Pedrero. Facultad de Psicología, Universidad de Oviedo, Plaza Feijoo, s/n, 33003 Oviedo (Spain). Phone: +34-985103272. Fax: +34-985104141. E-mail: [email protected]

Abstract

Anhedonia, a central dimension within the schizotypy construct, has been considered to be a promising vulnerability marker for schizophrenia-spectrum disorders. The Revised Physical Anhedonia Scale (RPhA) and Revised Social Anhedonia Scale (RSAS) are two self-reports widely used in the assessment of anhedonia; however, they psychometric characteristics have been scarcely investigated in Spanish population. The objective of the current work was to study the psychometric properties of the Revised Physical and Social Anhedonia Scales in non-clinical young adults. The sample was composed of 728 college students with a mean age of 20.1 years (SD=2.5. The data indicated that the scales showed adequate psychometric characteristics. The Cronbach alpha was 0.95 (RSAS) and 0.92 (RPhA) respectively. The confirmatory factor analysis carried out on the matrix of tetrachoric correlations showed that both scales presented an essentially unidimensional solution. The Revised Physical and Social Anhedonia Scales seem to be adequate for psychosis-risk assessment in non-clinical populations. Future research should further investigate the construct validity in other populations and cultures as well as study its relation to emotional aspects and cognitive endophenotypes.

La anhedonia ha sido considerada como un marcador prometedor de vulnerabilidad a los trastornos del espectro esquizofrénico siendo una dimensión central dentro del constructo de esquizotipia. La Revised Physical Anhedonia Scale (RPhA) y Revised Social Anhedonia Scale (RSAS), son dos autoinformes ampliamente utilizados para la evaluación de la Anhedonia, sin embargo sus propiedades psicométricas han sido escasamente investigadas en población española. El objetivo de este trabajo fue estudiar las propiedades psicométricas de las Escalas Revisadas Anhedonia Física y Anhedonia Social en jóvenes adultos no clínicos. La muestra estuvo compuesta por 728 participantes con una edad media de 20,1 años (DT=2,5). Los datos indicaron que las escalas presentaron un comportamiento psicométrico adecuado. El alfa de Cronbach ascendió a 0,95 (RSAS) y 0,92 (RPhA) respectivamente. El análisis factorial confirmatorio llevado a cabo sobre la matriz de correlaciones tetracóricas indicó en ambas escalas la presencia de una solución factorial esencialmente unidimensional. Las Escalas Revisadas de Anhedonia Social y Anhedonia Física parecen ser pruebas adecuadas para la evaluación del riesgo de psicosis en población no clínica. Futuras investigaciones deberían seguir investigando la validez de constructo en otras poblaciones y culturas así como observar su relación con aspectos emocionales y endofenotipos cognitivos.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2009

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