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Measuring Experiential Avoidance: Reliability and Validity of the Dutch 9-item Acceptance and Action Questionnaire (AAQ)

By P.A. Boelen and A.H.A. Reijntjes


Three studies evaluated psychometric properties of\ud the Dutch version of the 9-item Acceptance and Action\ud Questionnaire (AAQ)—a self-report measure designed to\ud assess experiential avoidance as conceptualized inAcceptance\ud and Commitment Therapy (ACT). Study 1, among bereaved\ud adults, showed that a one-factor model, with AAQ-items\ud constituting a single dimension of experiential avoidance,\ud fitted the data well. The internal consistency and temporal\ud stability of the AAQ were satisfactory. In Study 2, among\ud undergraduate students, and Study 3, among 60 outpatients,\ud higher AAQ scores were found to be significantly associated\ud with psychopathology, maladaptive coping strategies, and\ud neuroticism, attesting to the validity of themeasure. In support\ud of its incremental validity, Study 3 showed that the AAQ\ud remained significantly associated with depression and anxiety\ud after controlling for neuroticism and thought suppression. The\ud current studies complement prior research supporting the\ud psychometric properties of the AAQ and the ACT conceptualization\ud of experiential avoidance

Topics: Sociale Wetenschappen, Acceptance and action questionnaire, Experiential avoidance, Acceptance and commitment therapy, Psychometric properties
Year: 2008
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