Khadijeh Roushani - Department of Psychology, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Soodabeh Bassak Nejad - Department of Psychology, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Nasrin Arshadi - Department of Psychology, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Mahnaz Mehrabizadeh Honarmand - Department of Psychology, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Ahmad Fakhri - Department of Psychiatric, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

Background: Social anxiety is an extremely harmful disorder affectingmanyaspects of life and causes limited capability of encounteringsocial situations among individuals.Objectives: The purpose of this study was to examine the efficacy of the unified transdiagnostic treatment on social anxiety andpositive and negative affect in students.Methods: The statistical population of this study included all female undergraduate students with social anxiety in Ahvaz JundishapurUniversity of Medical Sciences. 32 female undergraduate students of medical sciences university of Ahvaz were selected amongthose with social anxiety score of 19 or more (cut-off score) through multistage random samplingmethodand were randomly placedin experimental and control groups. Social phobia inventory (SPIN) and positive and negative affect schedule (PANAS) were implementedon subjects of both groups before and after conducting the intervention. Unified transdiagnostic treatment was performedon the experimental group within 8 sessions of 90 minutes, but the control group received no intervention. Data were analyzed bymultivariate covariance analysis.Results: Results showed a significant difference between experimental and control groups in terms of social anxiety and negativeand positive affect, and unified transdiagnostic treatmenthas reduced social anxiety and negative affect and also has increased positiveaffect in experimental group.Conclusions: It may be concluded based on the results of this study that unified transdiagnostic treatment is effective on recoveryof social anxiety and negative and positive affects among the students. Therefore, clinical therapists are advised to use this intervention.

Unified Transdiagnostic Treatment, Social Anxiety, Positive and Negative Affect