The Mediating Role of the DSM-5 Presented Personality Traits in the Effectiveness of Cognitive Behavior Therapy on Insomnia Disorder in Students of the University of Kurdistan

Introduction: Insomnia is the most common sleep disorders and cognitive-behavioral therapy is an effective treatment of it. Personality traits, in addition to have a preparing and maintaining role in insomnia, can predict the outcomes of therapeutic interventions for it. The aim of this study was to the determination of the mediating role of  the presented personality  traits of  DSM-5 in the effectiveness of cognitive behavioral therapy on insomnia disorder in students of the University of Kurdistan. Methods: 34 students with insomnia were selected by convenience sampling, 17-person experimental and control groups, with Insomnia Severity Index and Personality Inventory for DSM-5 were assessed. The research design was experimental with pre-test and post-test. Data with descriptive statistical tests and univariate covariance analysis using SPSS software version 22 were analyzed. Results: The results indicate a significant  reduction  in insomnia severity scores in the experimental group, compared  to the control group participants have indicated that this the effectiveness of the treatment. The results showed that the high scored traits were significantly associated with therapeutic effects. Among them, the most hindering traits was eccentricity, attention seeking, anhedonia, intimacy avoidance, distractibility, impulsivity and emotional instability was more than other traits. Conclusion: Pathological personality traits are able to reduce the effects of cognitive behavioral therapy. Therefore, it  is necessary to be considered before the treatment and, if it is possible, to be treated.