Abstract
The Child Obsessive-Compulsive Impact Scale (COIS-R) is a parent- and self-report measure of the impairment related to Obsessive-Compulsive Disorder (OCD) symptoms. Previous research has demonstrated the reliability and validity of the original version of the COIS-R; to date, however, the scale has not been validated for use in Spanish samples of pediatric OCD. The present study aimed to assess the psychometric properties of this in a clinical sample of pediatric OCD (n = 91). Analyses of internal consistency, convergent and divergent validity were conducted. For both the COIS-R report scales estimates similar to those in the original instrument were obtained for internal consistency, test-retest reliability, and convergent validity. Thus, the Spanish version of the COIS-R seems to retain sound psychometric properties of its original version; it appears to be a reliable instrument for the assessment of obsessive-compulsive impairment and the effects of treatment, and can be used in other cultural contexts.
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