Adel Bahari - Msc of Health Education and Health Promotion, Faculty of Health, Ilam University of Medical Sciences, Ilam, Iran
Mohsen Jalilian - Assistant Professor of Health Education and Health Promotion, Faculty of Health, Ilam University of Medical Sciences, Ilam, Iran
Gholamreza Sharifirad - Professor of Health Education and Health Promotion, Faculty of Health, Qom University of Medical Sciences, Qom, Iran
Meysam Bazani - Msc of Clinical Psychology, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran.

BackgroundManagement and control of adolescence aggression improves constructive relationships, quality of life, and academic achievement. This research aimed to study the impact of educational intervention on reduction of aggression among male high school students in Ilam city, Iran.Materials and MethodsThis quasi-experimental intervention study using the pretest-posttest method was conducted on 70 aggressive male high school students in Ilam who were selected using the convenience sampling method. First, students were asked to fill out the Buss-Perry Aggression Questionnaire (BPAQ)and 70 of them with the highest score of aggression were selected as the sample. They received educational intervention for eight 90-minute sessions  during one month. Then post-test data were collected and follow-up at three months after the intervention and statistically analyzed using SPSS-20.ResultsThe mean age of subjects was 15.81±1.24 years old. 83% belonged to the urban community and 12.5% belonged to the rural community. The results showed that the educational intervention was effective in reduction of aggression levels and its four subscales (P<0.05). The results of the within-subject ANOVA indicated that the mean score of overall aggression, verbal aggression, physical aggression, anger, and hostility, follows a linear and descending trend from the posttest to the follow-up (P<0.05).Conclusion: The study findings suggest that development of educational interventions can lead to improved management of aggression and mental health of students.

Aggression, Educational intervention, high school students, Iran