Shahid Beheshti University Journal of Family Research 1735-8442 21 2 2025 06 22 The Effectiveness of Marital Enrichment Educational Intervention Based on Gottman Model on Sexual Intimacy and Loneliness in Couples The Effectiveness of Marital Enrichment Educational Intervention Based on Gottman Model on Sexual Intimacy and Loneliness in Couples 48 68 105752 10.48308/jfr.2025.238180.1904 FA Mahdiye Mohamadi Department of Counseling, Faculty of Educational Sciences and Psychology, Shahid Beheshti University, Tehran, Iran. Zahra Jahanbakhshi Department of Counseling, Faculty of Educational Sciences and Psychology, Shahid Beheshti University, Tehran, Iran. Maryam Fatehizadeh Department of Counseling, Faculty of Psychology, University of Isfahan,Iran Journal Article 2025 01 15 Sexual intimacy and loneliness are significant components influencing the quality of marital relationships. Loneliness can negatively affect couples' ability to establish deep emotional connections, potentially leading to emotional distancing. In contrast, sexual intimacy plays a vital role in psychological well-being, individual health, and marital adjustment, and its enhancement can improve the quality of marital life and increase marital satisfaction. This study aimed to examine the effectiveness of a marital enrichment intervention based on the Gottman model. The research employed a quasi-experimental design with pre-test, post-test, and follow-up, including a control group. The statistical population consisted of married couples in Isfahan, Iran, selected through voluntary sampling and randomly assigned to two equal groups. The experimental group participated in eight 90-minute sessions of marital enrichment training, while the control group only completed the research questionnaires during the pre-test, post-test, and follow-up phases. Data were analyzed using repeated measures multivariate analysis of variance. The results indicated that the intervention significantly increased sexual intimacy (F = 5.53, p < 0.05) and decreased feelings of loneliness (F = 41.76, p < 0.05), with the effects remaining stable after a two-month follow-up. Sexual intimacy and loneliness are significant components influencing the quality of marital relationships. Loneliness can negatively affect couples' ability to establish deep emotional connections, potentially leading to emotional distancing. In contrast, sexual intimacy plays a vital role in psychological well-being, individual health, and marital adjustment, and its enhancement can improve the quality of marital life and increase marital satisfaction. This study aimed to examine the effectiveness of a marital enrichment intervention based on the Gottman model. The research employed a quasi-experimental design with pre-test, post-test, and follow-up, including a control group. The statistical population consisted of married couples in Isfahan, Iran, selected through voluntary sampling and randomly assigned to two equal groups. The experimental group participated in eight 90-minute sessions of marital enrichment training, while the control group only completed the research questionnaires during the pre-test, post-test, and follow-up phases. Data were analyzed using repeated measures multivariate analysis of variance. The results indicated that the intervention significantly increased sexual intimacy (F = 5.53, p < 0.05) and decreased feelings of loneliness (F = 41.76, p < 0.05), with the effects remaining stable after a two-month follow-up. https://jfr.sbu.ac.ir/article_105752_2ef355711eb2d7a9407e583dd1c03557.pdf