Social Psychology Research

Abstract Introduction: Acceptance and commitment therapy (ACT) has shown promising results in improving the psychosocial well-being of patients with type 2 diabetes in various studies. The aim of this research is to determine the combined effect size of ACT on psychosocial dimensions in Iranian patients with type 2 diabetes.
Method: Meta-analysis was employed as the statistical method in this study. The statistical population consisted of 86 studies conducted between 2013 and 2023 that investigated the effectiveness of ACT on the psychosocial performance of type 2 diabetes patients in Iran.
Findings: Treatment based on acceptance and commitment therapy showed a significant impact on the psychosocial well-being of type 2 diabetes patients, with an overall effect size of 1.178, indicating a very strong effect. The average effect size for psychosocial dimensions with a dominant psychological component was 1.187, indicating a very strong effect, while the average effect size for psychosocial dimensions with a dominant social component was 0.791, indicating a strong effect.
Conclusion: Acceptance and commitment therapy has a significant positive impact on the psychosocial functioning of type 2 diabetes patients, with a greater effect on psychosocial dimensions with a dominant psychological component than on psychosocial dimensions with a dominant social component. These findings highlight the potential of ACT as an effective intervention to improve the well-being of patients with type 2 diabetes.