Comparison of the Effectiveness of acceptance and commitment therapy and mindfulness-based cognitive therapy on the intolerance of uncertainty of women affected by infidelity

The present study was an attempt to compare the effects of acceptance and commitment therapy and mindfulness-based cognitive therapy on the intolerance of uncertainty of women affected by infidelity. The present study was conducted using a quasi-experimental method of pre-test-post-test with a control group and a three-month follow-up. The statistical population of the present study consisted of all the women affected by the infidelity of their husbands who were referred to the family counseling centers in Karaj from the beginning of October to the middle of December 2022. Among these women, 45 people were selected as a sample and were placed in two experimental groups and one control group. The first and second experimental groups received acceptance and commitment therapy (ACT) and mindfulness-based cognitive therapy (MBCT), respectively, during 8 sessions. The tool of the study was the Intolerance of Uncertainty Scale (IUS) (Friston et al., 1994. The results of the mixed variance analysis showed a significant difference between the groups in the post-test and follow-up stages (P<0/0001). Both interventional methods reduced intolerance of uncertainty and their effectiveness lasted over time. Also, no significant difference was found between the effects of the two ways (P<0/0001). In general, the results of this study showed that both interventional methods were influential in the intolerance of uncertainty of women affected by infidelity.