Abstract
BACKGROUND: Regarding the prevalence and pervasiveness of psychiatric disorders, which significantly affect not only the patients themselves, but also their families, family therapy has emerged as a promising intervention. This research examined the effects of Acceptance and Commitment Therapy (ACT) on stigma and family functioning in family members of patients with psychiatric illnesses, demonstrating effectiveness in improving family functioning and coping strategies in the face of mental illness. METHODS: This randomized controlled clinical trial without blinding. Forty family members of patients with psychiatric disorders were randomly assigned to an intervention group (N = 20) or a control group (N = 20). The intervention group received ACT in eight weekly sessions, each lasting 90 min, while control group remained on a waiting list. Both groups were assessed at three time points: pre-intervention, post-intervention, and at a one-month follow-up. Data collection instruments included a demographic information questionnaire, a stigma assessment, and a family functioning measure. Data were analyzed using SPSS software version 23. RESULTS: A statistically significant difference was observed between the mean post-test and follow-up stigma scores of the intervention and control groups (P < 0.05). The intervention group's mean scores showed a rising trend, whereas the control group's mean scores showed a declining trend. This was evident from within-group comparisons of the mean post-test and follow-up stigma scores. Repeated measures ANOVA indicated that the pattern of change in stigma for the intervention group was significant, in contrast to control group, suggesting a reduction in stigma (P < 0.001). CONCLUSION: In light of the findings presented in this study, ACT emerges as a promising intervention for mitigating stigma, and enhancing the family functioning of individuals afflicted with mental disorders. To improve the generalizability of the study results, comparable studies using this therapy method should be undertaken on family caregivers of patients with mental illnesses. IRANIAN REGISTRY OF CLINICAL TRIALS: IRCT registration number: IRCT20190917044802N10. REGISTRATION DATE: 14/9/2023.