Psychometric properties of the Spanish version of the Obsessive Belief Questionnaire-Children's Version in a non-clinical sample. The aim of this study was the adaptation to Spanish of the Obsessive Belief Questionnaire-Children's Version (OBQ-CV) in a non-clinical sample. Confirmatory factor analyses revealed the best fit for a model of three factors (Perfectionism/Certainty, Importance/Control of Thoughts, and Responsibility/Threat Estimation) and one higher-order factor. Moreover, results showed that the Spanish OBQ-CV is a reliable measure. This version also showed good criterion validity with obsessive-compulsive symptom measures and with scores of beliefs relevant to obsessive-compulsive disorder. Lastly, this version showed good divergent validity with depression and anxiety measures.