Document Type : Original Article
Department of Psychology, Faculty of Educational Sciences and Psychology, Shahid Chamran University, Ahvaz, Iran
Department of Psychology, Faculty of Educational Sciences and Psychology, University of Isfahan, Isfahan, Iran
Department of Psychology, Faculty of Literature and Humanities, Salman Farsi University of Kazerun, Kazerun, Iran
Introduction: The purpose of this study was to investigate the effectiveness of cognitive-behavioral therapy in the depression of adolescents by an increase in pleasurable activities as a mediation.
Method: The statistical population included all adolescent girls (ages14to17) in Isfahan. In the form of an empirical study with a control and an experimental group and by evaluation of pre-test and post-test, 60girls which had been diagnosed with depression were selected and randomly assigned into two groups. Subjects, using Beck Depression Inventory (BDI-II) and Pleasant Events Schedule (PES).Data were analyzed for mediation analysis by R software and ANCOVA by SPSS-24.
Results: Findings show that cognitive-behavioral therapy is effective in increasing pleasurable activities (path coefficient: 0.19). The increase of pleasurable activities is effective in reducing depression (path coefficient: 0.35) and the cognitive-behavioral therapy by the mediation of pleasurable activities (path coefficient: 0.28) is effective. The entire effect of cognitive-behavioral therapy was on depression (β=0.28). Actually, 22%direct and 0.06%indirect effects was applied through the effect of pleasurable activities on depression.
Conclusion: Mediation analysis showed that pleasant events can play a mediating role in the relationship between depression and cognitive-behavioral therapy and can be used in short-term treatments.