The effectiveness of parental management training on self-harm and aggression of students with self-injurious behavior in Shiraz high school

Introduction: Because of the physical, psychological, and social changes, adolescence is associated with increased self-aggression and aggressive behaviors. The aim of this study was to investigate the effectiveness of parental management training on self-harm and aggression of students with self-injurious behavior in high school in Shiraz. Method: This study had a pre-test, post-test, and follow-up design with a control group. The statistical population of this study included all adolescent girls aged 14-18 years who were referred to the Shiraz Education Counseling Clinic in the academic year 1400-1399. By purposive sampling method, 30 people who met the inclusion criteria were selected and divided into experimental and control groups. The research instruments included a Buss-Perry Aggression Questionnaire and a Self-harm Questionnaire that was completed by the participants in the pre-test, post-test, and follow-up. For the mothers of the experimental group, parental management training was performed in 8 sessions of -90 minutes, and during this period, the control group did not receive any treatment. Results: According to the results, the mean scores for the experimental group in aggression and self-harm in the pre-test were 121.87 and 15.87, respectively, which decreased to 62.93 and 9.33 in the post-test. According to the time effect, group effect, and time and group interaction, results were significant in self-harm scores and aggression at the level of 0.001. Therefore, parental management training has significantly reduced aggression and self-harm scores. Conclusion: Based on the results, parental management training effectively reduced the aggression and self-harm of students with self-harm behavior in high school in Shiraz.