Date of Award

2010

Degree Type

Thesis

Department

Psychology

First Advisor

Poreh, Amir

Subject Headings

Obsessive-compulsive disorder -- Research, Personality assessment, Questionnaires, Obsessive-Compulsive personality disorder questionnaire, Assessment, Reliability, Validity

Abstract

The present research was designed to evaluate the reliability and validity of a new measure for Obsessive Compulsive Personality Disorder, namely the Obsessive Compulsive Personality Disorder Questionnaire (OCPDQ). One hundred and forty students at a Midwestern urban university were administered the OCPDQ as well as the Leyton Obsessional Inventory (LOI Cooper, 1970) and the Padua Inventory-Washington State University Revision (PI-WSUR Burns, Keortege, Formea, & Sternberger, 1996). The reliability and validity of the OCPDQ were analyzed and each of the eight subscales that corresponded to the eight criteria for OCPD were examined. The OCPDQ had a high level of reliability with a Cronbach's alpha of .845. The OCPDQ scale was then reduced through item deletion from 143 items to 80 items with 10 items per subscale. The resulting Cronbach's alpha for the 80 item revision of the OCPDQ was .820. A principal components factor analysis showed that there were three underlying dimensions in the revised version of the OCPDQ. The three factors which emerged were Factor I: "Perfectionism", Factor II: "Inflexible Control", and Factor III: "Disorganized Hoarding". The revised OCPDQ was found to have high internal consistency as well as construct validity

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