Psychological disorders are seen in more than a quarter of inpatients and are more common in diabetics than in the general population. This is while they are often not noticed and diagnosed by doctors or their psychological problems are inappropriately attributed to diseases with psycho-physical problems. The aim of this study was to investigate the effectiveness of group therapy based on acceptance and commitment to reduce marital conflict and increase the psychological capital of married women with type 2 diabetes. The research method is quasi-experimental with pre-test-post-test and the statistical population of the study is all married women with type 2 diabetes and marital conflicts who have been nominated for participation in this study according to the diagnosis of endocrinologist using blood sugar test. Using the available sampling method, 24 patients were selected as the study sample, of which twelve were in the experimental group and twelve were on the waiting list. The Kansas Marital Conflict Questionnaire and Lutans Psychological Assets were used to measure the variables. Subject information and questionnaire scores and data analysis were performed by SPSS software. According to statistical analysis, acceptance and commitment group therapy had an effective role in reducing marital conflict and increasing the psychological capital of married women with type 2 diabetes. Therefore, through group therapy based on acceptance and commitment, it can play a facilitating role in the treatment and mental health of patients with diabetes in reducing marital conflicts and increasing psychological capital .

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