Being overweight, a severe public health problem, is associated with experiential avoidance. This study aims to examine the reliability and validity of the Turkish version of the Acceptance and Action Questionnaire for weight-revised (AAQW-R) in people with a BMI above 25. The sample consisted of 169 participants with a Body Mass Index (BMI) above 25. The participants who gave informed consent were asked to fill out a demographic form, AAQW-R (Acceptance and Action Questionnaire-2), AAQ-2, Weight Self- Stigma Questionnaire (WSSQ), and General Health Questionnaire (GHQ). Internal consistency and item-total correlation were evaluated using Cronbach’s alpha coefficient. Cronbach’s alpha coefficient was used to test the factor structure. The temporal stability was assessed with the test-retest method. AAQW-R has significant correlations with BMI, AAQ-2, WSSQ, and GHQ. CFA demonstrates a three- factor structure (χ2=57.0, df=31; RMSEA=0.0714; RMSEA 90% CI lower bond=0.0411, RMSEA 90% CI upper bond=0.100, CFI=0.968; TLI=0.954). AAQW-R and subscales of AAQW-R have significant correlations with AAQ-2, AAQW-R, BMI, WSSQ, and GHQ (p<0.05). Correlation analysis stated temporal stability for all items in Spearman correlation analyses (p<0.05). According to the results of this study, AAQW-R is a reliable and valid scale that can measure experiential avoidance in the context of psychological flexibility among overweight and obese people.
