The Conners’ Adult ADHD Rating Scales—Short Self-Report and Observer Forms: Psychometric Properties of the Catalan Version

© 2012 SAGE Publications. Objective: To validate the Catalan adaptation of the Conners’ Adult ADHD Rating Scales (CAARS), short version (self-report: CAARS-S:S; observer: CAARS-O:S). Method: A community sample of 424 adults responded to the two forms. Confirmatory factor analysis was used to test the dimensional structure. Results: The hypothesized four-factor model (Inattention/Memory Problems, Hyperactivity/Restlessness, Impulsivity/Emotional Lability, and Problems With Self-Concept) presented an adequate fit for the self-report and observer forms. Reliability was slightly higher for the CAARS-O:S (average α =.78) than for the CAARS-S:S (average α =.75). Test–retest average correlations were r =.80 (self-reports) and r =.73 (observer ratings). Informant agreement was high at test (average r =.59) and retest (average r =.61). There were significant gender and age differences. Conclusion: This adaptation of the two short forms of the CAARS-S presents adequate evidence of validity and reliability, and it can therefore be used for diagnostic purposes and cross-cultural comparisons.