Abstract
The present study aimed to develop a questionnaire to measure acceptance, a behavioral process that is emphasized in the third-wave cognitive and behavioral therapies, and to confirm its reliability and validity. Undergraduate and graduate students completed questionnaires. The results of a factor analysis indicated that the new 13-item questionnaire, the Acceptance Process Questionnaire (APQ), had a 4-factor pattern. The middle- or long-term results factors were “expanding behavioral repertoire” and “being receptive to the real world”. The behavioral content factors were “making a choice not to avoid private events” and “stopping reactions”. The questionnaire had adequate structural validity and internal consistency. Additionally, it is assumed that the Acceptance Process Questionnaire measures acceptance on the entire scale. However, more refinement is needed concerning convergent validity and test-retest reliability. Future research should aim to increase the workability of the questionnaire by confirming its test-retest reliability with a larger sample and by indicating the relation between questionnaire scores and behavioral tendencies in real-life.
