PSYCHOMETRIC PROPERTIES OF THE TURKISH VERSION OF THE ACCEPTANCE AND ACTION QUESTIONNAIRE-II (AAQ-II)


MEUNIER B., Atmaca S. , AYRANCI E., GOKDEMIR B. P. , UYAR T., BASTUG G.

JOURNAL OF EVIDENCE-BASED PSYCHOTHERAPIES, vol.14, no.2, pp.179-196, 2014 (Journal Indexed in SSCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 14 Issue: 2
  • Publication Date: 2014
  • Title of Journal : JOURNAL OF EVIDENCE-BASED PSYCHOTHERAPIES
  • Page Numbers: pp.179-196
  • Keywords: psychological inflexibility, experiential avoidance, acceptance and commitment therapy, acceptance and action questionnaire-II, psychometric properties, EXPERIENTIAL AVOIDANCE, INVENTORY, DEPRESSION, ANXIETY, PSYCHOPATHOLOGY, THERAPY, MODEL

Abstract

The aim of the study was to evaluate the psychometric properties of the Turkish version of the Acceptance and Action Questionnaire-II (AAQ-II). This instrument was designed to assess psychological inflexibility, a key construct in Acceptance and Commitment Therapy (ACT). The participants were 291 university students. The test-retest stage was conducted with 80 participants over a 2-month period. Confirmatory Factor Analysis (CFA) supported a one-factor model with seven items. Internal consistency was high (.88) and test-retest reliability was good (.78). Higher AAQ-II scores were associated with higher levels of depression, anxiety, and thought suppression supporting the concurrent and convergent validity. This study provides further evidence of the improvement shown by the 7-item version of the AAQ-II in terms of psychometric properties compared with the previous versions. Our results suggest that the Turkish version of the AAQ-II is a reliable and valid measure of psychological inflexibility.