University of Mohaghegh Ardabili Journal of Research in Psychopathology 2783-3208 Articles in Press 2025 08 01 Investigating the effectiveness of emotional schema therapy on cognitive emotion regulation, uncertainty intolerance, and psychological flexibility in male students with social anxiety disorder 3869 10.22098/jrp.2025.16829.1286 EN Davod Ghaderi Department of Psychology, Sarab Branch, Islamic Azad University, Sarab, Iran Bahman Kord Department of Psychology, Mahabad Branch, Islamic Azad University, Mahabad, Iran Journal Article 2025 02 19 The purpose of this study was to investigate the effectiveness of emotional schema therapy on cognitive regulation of emotion, intolerance of uncertainty, and psychological flexibility in male students with social anxiety disorder. The present study is among the semi-experimental studies of pre-/post-test type with a three-month follow-up with control and experimental groups. The current study population included all male students with social anxiety disorder in Harris City in the first half of the academic year 2024. Thirty people were selected from this community by purposeful sampling based on the entry criteria and replaced in experimental and control groups. All the examined samples were in two groups: pre-/post-test and follow-up stages of the cognitive emotion regulation questionnaire, intolerance of ambiguity, and completion of the Cognitive Flexibility Questionnaire. The experimental group was treated with the emotional schema therapy package in 9 sessions of 90 minutes. The results were analyzed through multivariate covariance analysis with repeated measurements and SPSS27 software. The results showed that the experimental group, compared to the control group, after applying emotional schema therapy, obtained lower scores in non-adaptive cognitive strategies and higher scores in adaptive cognitive strategies, cognitive regulation of emotion, psychological flexibility, and intolerance of uncertainty. These results have been stable in the three-month follow-up. Based on the results, emotional schema therapy can be considered a therapeutic approach in this field.