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Dysfunctional Belief Domains Related to Obsessive-Compulsive Disorder: A Further Examination of their Dimensionality and Specificity

Published online by Cambridge University Press:  10 January 2013

Amparo Belloch*
Affiliation:
Universidad de Valencia (Spain)
Carmen Morillo
Affiliation:
Agencia Valenciana de Salud (Spain)
Juan V. Luciano
Affiliation:
Servicio de Salud Mental San Boi de Llobregat (Spain)
Gemma García-Soriano
Affiliation:
Universidad de Valencia (Spain)
Elena Cabedo
Affiliation:
Agencia Valenciana de Salud (Spain)
Carmen Carrió
Affiliation:
Agencia Valenciana de Salud (Spain)
*
Correspondence concerning this article should be addressed to Amparo Belloch Fuster. Departamento de Personalidad, Evaluación y Tratamientos Psicológicos. Facultad de Psicología. Universidad de Valencia. Av. Blasco Ibáñez, 21. 46010. Valencia (Spain). Phone: +34-963983439. Fax: +34-963864 669. E-mail: amparo.belloch@uv.es.

Abstract

International consensus has been achieved on the existence of several dysfunctional beliefs underlying the development and/or maintenance of the Obsessive-Compulsive Disorder (OCD). Nevertheless, questions such as the dimensionality of the belief domains and the existence of OCD-specific dysfunctional beliefs still remain inconclusive. The present paper addresses these topics through two different studies. Study 1: A series of confirmatory factor analyses (N= 573 non-clinical subjects) were carried out on the Obsessive Beliefs Spanish Inventory-Revised (OBSI-R), designed to assess dysfunctional beliefs hypothetically related to OCD. An eight-factor model emerged as the best factorial solution: responsibility, over-importance of thoughts, thought-action fusion-likelihood, thought action fusion-morality, importance of thought control, overestimation of threat, intolerance of uncertainty and perfectionism. Study 2: The OBSI-R and other symptom measures were administered to 75 OCD patients, 22 depressed patients, and 25 non-OCD anxious patients. Results indicated that, although OCD patients differed from their non-clinical counterparts on all of the OBSI-R subscales, no evidence of OCD-specificity emerged for any of the belief domains measured, as the OCD subjects did not differ from the other two clinical groups of patients.

Hay un consenso internacional sobre la existencia de ciertas creencias disfuncionales que subyacen al desarrollo y/o al mantenimiento del trastorno obsesivo-compulsivo (TOC). No obstante, temas tales como la dimensionalidad de tales creencias y si son específicas del TOC, siguen pendientes de resolución. Este artículo examina estos aspectos mediante dos estudios diferentes: Estudio 1: Se realizaron análisis factoriales confirmatorios (573 sujetos no clínicos) del Inventario Español de Creencias Obsesivas-Revisado (ICO-R), que fue diseñado para evaluar creencias disfuncionales relacionadas con el TOC. La mejor solución factorial posible fue la de 8 factores: responsabilidad; importancia de los pensamientos; fusión pensamiento-acción probabilidad; fusión pensamiento-acción, moralidad; importancia de controlar los pensamientos; sobrestimar el peligro; intolerancia a la incertidumbre; y perfeccionismo. Estudio 2: El ICO-R se administró, junto con otros cuestionarios de síntomas, a 75 pacientes TOC, 22 deprimidos, y 25 pacientes con trastornos de ansiedad no-TOC. Los resultados indican que, si bien los pacientes TOC difieren de la población no clínica en todas las subescalas del ICO-R, ninguno de los dominios de creencias es específico del TOC, dado que estos pacientes no se diferenciaron de los otros dos grupos en ninguna de las subescalas del ICO-R.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2010

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