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Peer influence and non-suicidal self-injury in adolescence : exploring the role of co-rumination
Sarah Lloyd (author)Joan Kimball (thesis supervisor)Derrick Klaassen (thesis supervisor)Jennifer Muehlenkamp (external examiner)Trinity Western University SGS (Degree granting institution)
The main purpose of this study was to investigate the relationship between co-rumination and non-suicidal self-injury (NSSI) in a community sample of adolescents. Analysis of the data from 92 adolescent self-injurers, 51 female and 41 male, indicated that there was a significant, positive correlation of small effect size between adolescents’ level of co-rumination and their frequency of self-injury in the past year. When genders were examined separately, this positive correlation of small effect size remained significant solely for male participants. Contrary to expectations, co-rumination failed to moderate the relationship between depression and NSSI frequency, and stressful life events failed to moderate the relationship between co-rumination and NSSI frequency. Results from further post-hoc analyses and related research on peer socialization suggest possible reasons for these results and future research avenues. The strengths, contributions, and clinical implications of this study are also discussed.
Teenagers – Suicidal behavior.Adolescent psychology.Self-injurious behavior.Self-mutilation.Co-rumination.Non-suicidal self-injury.