KMAN Publication Inc. (KMANPUB) Psychology of Woman Journal 3041-8615 7 Serial Number 27 2026 07 01 Effectiveness of Group Training Based on Choice Theory on Family Functioning and Responsibility in Married Women Effectiveness of Group Training Based on Choice Theory on Family Functioning and Responsibility in Married Women 1 11 10.61838/kman.pwj.4902 EN Journal Article 2025 09 27 <p><strong>Objective:</strong> The present study aimed to examine the effectiveness of group training based on Choice Theory on family functioning and responsibility among married women aged 40 to 55 years in District Three of Tehran in the year 2024.</p> <p><strong>Methods and Materials: </strong>This research employed a quasi-experimental design using a pretest–posttest control group with a two-month follow-up phase. The statistical population consisted of married women aged 40 to 55 years residing in District Three of Tehran in 2024. From this population, 100 participants were selected through convenience sampling and completed the research instruments, including the California Psychological Inventory Responsibility Scale (1987) and the McMaster Family Assessment Device developed by Epstein et al. (1980). Participants whose scores on family functioning and responsibility were below the sample mean were identified, and 48 of them were purposively selected and randomly assigned into two equal groups: an experimental group and a control group. Both groups completed the pretest simultaneously. The experimental group then received group training based on Glasser’s Choice Theory (2001) in eight weekly sessions, each lasting 120 minutes, while the control group received no intervention. Four days after completion of the sessions, both groups completed the posttest simultaneously. Two months later, follow-up assessments of the dependent variables were administered to the experimental group. The collected data were analyzed using repeated measures analysis of variance, Bonferroni post-hoc tests, and SPSS version 23.</p> <p><strong>Findings: </strong>The results indicated that group training based on Choice Theory significantly improved family functioning and responsibility among married women at the posttest stage. Moreover, a significant difference between the experimental and control groups was observed at the follow-up phase, indicating that the experimental group maintained superior scores in both family functioning and responsibility (p &lt; 0.01).</p> <p><strong>Conclusion: </strong>Based on these findings, it can be concluded that the principles of Choice Theory can be effectively applied to enhance family functioning and responsibility among married women.</p> https://www.journals.kmanpub.com/index.php/psywoman/article/download/4902/8814