Involvement in bullying and depression in a 2-year follow-up in middle adolescence

  title={Involvement in bullying and depression in a 2-year follow-up in middle adolescence},
  author={Riittakerttu Kaltiala-Heino and Sari Fr{\"o}jd and Mauri Marttunen},
  journal={European Child \& Adolescent Psychiatry},
The main objective was to analyse whether involvement in bullying at school predicts depression, and whether depression predicts involvement in bullying in middle adolescence. A total of 2,070 15-year-old girls and boys in two Finnish cities were surveyed at ninth grade (age 15) at schools, and followed up 2 years later in the Adolescent Mental Health Cohort Study (AMHC). Depression was measured by a Finnish modification of the 13-item short Beck Depression Inventory. Involvement in bullying… 
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