Brief implementation method:
The research method of this study is a clinical trial. First, according to the statistical population of this study, which will include all students of Zanjan University of Medical Sciences, a sample of 160 people will be available, then a questionnaire for insomnia (ISI) and symptoms of mental disorders, 25 questions (SCL-25) They will be implemented. Of those who scored ISI scores above 15 and SCL-25 scores below 45, and who have been suffering from insomnia for at least one month, a sample of 32 subjects was selected in a simple random manner and divided into two groups of 16 and control will be made.
In the next step and in the pretest, a negligible questionnaire for BTPS, PANAS's positive and negative affective questionnaire will be implemented. In order to implement cognitive-behavioral insomnia for insomnia, the experimental group will use the protocol of Edinger and Carney (2008) as a group therapy, in the form of a 8-week 90-minute intervention, put a sleep hygiene leaflet to the control group to influence the cognitive domain. To be after performing group therapy intervention, the questionnaires are re-implemented and eventually follow-up one month after the intervention by re-running the questionnaires.