Psychometric Properties of the German Brief Experiential Avoidance Questionnaire (BEAQ).

The Brief Experiential Avoidance Questionnaire (BEAQ) is a 15-item short form of the Multidimensional Experiential Avoidance Questionnaire. This study aimed to investigate psychometric properties of a German translation of the BEAQ in a student and a clinical population. The BEAQ showed high internal reliability and overall acceptable convergent and discriminant validity. The BEAQ displayed adequate 7- to 13-day test-retest reliability and captured changes in experiential avoidance when experiential avoidance was targeted in treatment. Confirmatory factor analyses indicated that a bifactor structure where the BEAQ is modeled as one general and five specific factors that correspond to the Multidimensional Experiential Avoidance Questionnaire subscales fit the data adequately. All items (except Item 1 in the clinical population) loaded on the general factor and common variance was approximately equally spread across the general and specific factors. The Distress Endurance subscale was not included in this model, since it is represented by only one item, which showed poor performances and low associations to the BEAQ's total score in both samples. We recommend further research into the BEAQ's factor structure to substantiate our preliminary findings.