KMAN Publication Inc. (KMANPUB) KMAN Counseling & Psychology Nexus 3041-9026 4 Serial Number 6 2026 01 01 Effectiveness of Self-Regulation–Based Couple Therapy on Marital Adjustment and Positive Thinking Among Married Employees in Healthcare Centers Effectiveness of Self-Regulation–Based Couple Therapy on Marital Adjustment and Positive Thinking Among Married Employees in Healthcare Centers 1 10 10.61838/kman.fct.psynexus.4799 EN Journal Article 2025 08 04 <p>This study aimed to investigate the effectiveness of self-regulation–based couple therapy on marital adjustment and positive thinking among married employees working in healthcare centers in Sari. This quasi-experimental study used a pretest–posttest design with a control group. The statistical population included all married employees of healthcare centers in Sari during the fall of 2021, from which 30 individuals were selected through cluster sampling and assigned to experimental (n = 15) and control (n = 15) groups. Data were collected using the Spanier Marital Adjustment Scale (1976) and the Ingram &amp; Wisnicki Positive Thinking Questionnaire (1998). The experimental group received nine 90-minute sessions of self-regulation–based couple therapy, whereas the control group received no intervention. After the intervention, both groups completed the posttest. Data analysis was conducted using univariate and multivariate analysis of covariance (ANCOVA and MANCOVA) in SPSS-22. Results showed a significant effect of the intervention on marital adjustment (F = 85.72, p &lt; .001, η² = .76) and positive thinking (F = 87.93, p &lt; .001, η² = .77). Significant improvements were also found in marital adjustment subcomponents, including dyadic satisfaction (F = 23.04, p &lt; .001, η² = .46), dyadic cohesion (F = 48.63, p &lt; .001, η² = .64), dyadic consensus (F = 19.78, p &lt; .001, η² = .42), and expression of affection (F = 55.58, p &lt; .001, η² = .67). Statistical power across all analyses ranged from .99 to 1.00, confirming the robustness of the findings. Self-regulation–based couple therapy significantly enhances marital adjustment, positive thinking, and key relational dimensions, demonstrating its effectiveness as a comprehensive therapeutic approach for improving marital functioning.</p> https://www.journals.kmanpub.com/index.php/psychnexus/article/download/4799/8658