Psychometric Properties of the French and English Versions of the Vancouver Obsessional‐Compulsive Inventory and the Symmetry Ordering and Arranging Questionnaire

Abstract

The Vancouver Obsessional-Compulsive Inventory (VOCI) and the Symmetry Ordering and Arranging Questionnaire (SOAQ) are self-report measures that assess a wide variety of symptoms and features of obsessive-compulsive disorder (OCD) including checking, contamination, obsessions, hoarding, "just right", indecisiveness, and symmetry, ordering and arranging obsessions and compulsions. The original English versions of the VOCI and SOAQ have been shown to demonstrate excellent psychometric properties. The present study examined the reliability and validity of French translations of these measures in a non-clinical sample, and also involved the collection of supplementary psychometric information about the English versions of the scales from a new sample. Volunteer undergraduate students completed questionnaire packages including the VOCI and SOAQ, as well as measures of obsessive-compulsive, phobic and depressive symptomatology in their native language of either French or English. Results indicate that the French versions of the VOCI and SOAQ demonstrate similar and excellent psychometric properties to the English versions and that these measures are highly valid and reliable assessment tools for use in clinical and research applications in both languages.

El sacrificio de la validez a expensas de la Habilidad en psicopatología: Mirando por un cristal opaco

“…De este modo, la fi abilidad de la categoría diagnóstica es elevada utilizando diferentes sistemas de clasifi cación e instrumentos de evaluación estandarizados 43 . Desde la tradicional Yale-Brown Obsessive Compulsive Scale (YBOCS) en sus versiones para adultos e infantil 44 , diferentes instrumentos han sido diseñados para la evaluación clínica de los síntomas del TOC, presentando altos valores de fi abilidad y validez concurrente con la propia escala de Yale-Brown: Florida Obsessive-Compulsive Inventory 45,46 , Obsessive-Compulsive Inventory-Revised 47 , Vancouver Obsessional-Compulsive Inventory 48 , etc. Otro ejemplo, al igual que los ya analizados de esquizofrenia y trastorno bipolar, en los que la alta fi abilidad y operatividad diagnóstica se conseguirían sin sacrifi car la validez de la categoría diagnóstica.…”

Psychometric Properties of the Persian Version of the Vancouver Obsessional-Compulsive Inventory Inventory (VOCI) in Iranian Non-Clinical Sample

“…It assesses a wider range of OCD symptoms than previous self-report instruments (Radomsky et al, 2006;Thordarson et al, 2004). Thordarson et al (2004) believe that with the revision of the MOCI, the VOCI was designed to provide assessment of a wider range of obsessions, compulsions, avoidance behavior, and personality characteristics of known or theoretical importance in OCD.…”

“…For example, it fails to measure important OCD symptom dimensions (e.g. symmetry and ordering, repugnant obsessions); it uses confusing reverse scoring and its dichotomous true/false response format is not suitable for the assessment of gradual change over time (Radomsky et al, 2006;Thordarson et al, 2004).…”

“…But in addition to the English version, the VOCI is available in German, Spanish, French, Persian, Chinese, and Italian (Radomsky et al, 2006). Arjona et al (2009) examined the factorial structure and psychometric properties of the VOCI in two non-clinical Spanish samples.…”

“…The Spanish VOCI showed to be a reliable measure with good convergent and divergent validity that assesses beliefs that are relevant to the obsessive-compulsive disorder. The French versions of the VOCI demonstrate similar and excellent psychometric properties to the English versions and are highly valid and reliable assessment tools for use in clinical and research applications in both languages (Radomsky et al, 2006). …”