Association between bullying victimization and post-traumatic stress disorders among Chinese adolescents: a multiple mediation model

Abstract Background Research that focused on the mechanisms underlying the relation between school bullying victimization and PTSD ignored the simultaneous effect of emotional and cognitive factors, which may limit our comprehensive understanding of their roles. Besides, most researchers included non-bullying victims in data analysis, and this may mask the true effect among bullying victims. The present study aimed to explore the relation between bullying victimization and PTSD, and the mediating roles of social anxiety, loneliness, and rumination, after filtering out non-bullying victims. Materials and methods In April 2019, we used convenience sampling to recruit 5013 students from Grade 10 and 11 in two high schools in Anhui Province, China. The mean age of these students was 16.77 (SD = 0.92) years. They completed five self-report questionnaires including the Delaware Bullying Victimization Scale-Student Chinese Revision (DBVS-S), the modified PTSD Checklist, the Social Anxiety Scale, the Adolescent Loneliness Scale, and the Rumination Scale. Further, a total of 443 bullying victims were screened out for this study according to the critical score of the DBVS-S. Results The results showed that bullying victimization had a direct and positive association with PTSD among adolescents (β = 0.16, 95%CI: 0.046–0.252). Bullying victimization was positively associated with PTSD through increasing adolescents’ social anxiety (β = 0.06, 95%CI: 0.017–0.105), as well as through increasing their loneliness (β = 0.16, 95%CI: 0.109–0.215). In addition, bullying victimization was positively associated with PTSD through social anxiety via loneliness (β = 0.04, 95%CI: 0.013–0.067), as well as through loneliness via rumination (β = 0.02, 95%CI: 0.003–0.033). Bullying victimization was also positively associated with PTSD through a three-step path from social anxiety to rumination via loneliness (β = 0.004, 95%CI: 0.001–0.009). Conclusions Social anxiety, loneliness, and rumination have important mediating effects in the relation between bullying victimization and adolescents’ PTSD, in which emotional factors (e.g., social anxiety, loneliness) are more crucial than cognitive factors (e.g., rumination). Intervention should pay more attention to timely alleviate victims’ emotional problems to reduce the risk of developing PTSD.