Maher Institute Inc Iranian Journal of Neurodevelopmental Disorders 3115-848X In Press 2027 01 01 Comparing the Effectiveness of Metacognitive Therapy and Cognitive Behavioral Therapy in Improving Binge-Eating Symptoms and Metacognitive Beliefs among Individuals with Binge-Eating Disorder Comparing the Effectiveness of Metacognitive Therapy and Cognitive Behavioral Therapy in Improving Binge-Eating Symptoms and Metacognitive Beliefs among Individuals with Binge-Eating Disorder 1 15 EN Azam Davoodi Department of Psychology, Shi.C., Islamic Azad University, Shiraz, Iran Journal Article 2026 03 26 <p><strong>Purpose: </strong>This study aimed to compare the effectiveness of metacognitive therapy and cognitive behavioral therapy in reducing binge-eating symptoms and dysfunctional metacognitive beliefs among individuals with binge-eating disorder.</p> <p><strong>Methods and Materials:</strong> This quasi-experimental study employed a pretest–posttest design with a two-month follow-up and two intervention groups. The statistical population comprised all individuals with binge-eating disorder who attended the Tehran Binge Eating Association in 2025. Thirty eligible participants were selected through purposive sampling and randomly assigned to either a metacognitive therapy group or a cognitive behavioral therapy group, with 15 participants in each group. Both groups received 12 group-therapy sessions. Data were collected using the Binge Eating Scale developed by Gormally et al. (1982) and the Metacognitions Questionnaire developed by Wells and Cartwright-Hatton (2004). After removing two outlier scores, data from 28 participants were analyzed using analysis of covariance in SPSS version 27.</p> <p><strong>Findings:</strong> Metacognitive therapy produced a significantly greater reduction in binge-eating symptoms than cognitive behavioral therapy at posttest, and this superiority was maintained at the two-month follow-up (p &lt; .001). Metacognitive therapy also resulted in a significantly greater reduction in the total score of dysfunctional metacognitive beliefs at posttest; however, the between-group difference was not significant at follow-up. Component-level analyses indicated that metacognitive therapy was significantly more effective in reducing positive beliefs about worry, the need to control thoughts, cognitive confidence, and cognitive self-consciousness at both posttest and follow-up (p &lt; .001). Nevertheless, no significant difference was observed between the two treatments in negative beliefs concerning the uncontrollability and danger of thoughts (p &gt; .05).</p> <p><strong>Conclusion:</strong> Metacognitive therapy appears to be more effective than cognitive behavioral therapy in reducing binge-eating symptoms and modifying several dimensions of dysfunctional metacognitive beliefs in individuals with binge-eating disorder. However, booster sessions and longer follow-up periods may be necessary to consolidate changes in overall metacognitive beliefs.</p> https://www.maherpub.com/index.php/jndd/article/download/928/703