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Objective <p>This longitudinal study examined the relationship between cyberbullying victimization (CV) and non-suicidal self-injury (NSSI) among Chinese vocational college students, testing the mediating role of ruminative contemplation (RC) and the moderating effect of friendship quality (FQ).</p> Methods <p>A six-month longitudinal design was implemented with 2,312 vocational students (<i>M</i><sub>age(T1)</sub> = 19.06; 35.55% CV prevalence, 19.26% NSSI prevalence at baseline). Data were collected at two waves (T1: December 2024; T2: June 2025) using validated scales: Cyberbullying Inventory for College Students (CICS), Adolescent Self-Harm Questionnaire, Event-Related Rumination Inventory (C-ERRI), and Friendship Quality Questionnaire (FQQ-C). Cross-lagged panel models (CLPM) and moderated mediation analyses were conducted via Mplus 8.3, controlling for gender, only-child status, and residence.</p> Results <p>CV directly predicted increased NSSI over time. RC mediated the CV→NSSI link. FQ significantly buffered the direct CV→NSSI pathway, with maximal protection observed at FQ scores = 212.3 (Johnson-Neyman analysis).</p> Conclusions <p>Cyberbullying victimization heightens NSSI risk both directly and indirectly through ruminative contemplation. High-quality friendships mitigate this pathway, offering a critical protective factor for vocational students. Interventions should target RC reduction and FQ enhancement to disrupt the CV→NSSI trajectory.</p>

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The dynamic interplay of cyberbullying victimization and self-injury: a longitudinal investigation of rumination and friendship quality in Chinese vocational students

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月4日

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  • Xiao Ma,
  • Lulu He,
  • Meijie Yu,
  • Shujun Li,
  • Longfei Guo,
  • Xu You,
  • Jia Xu,
  • Lei Yu

摘要

Objective

This longitudinal study examined the relationship between cyberbullying victimization (CV) and non-suicidal self-injury (NSSI) among Chinese vocational college students, testing the mediating role of ruminative contemplation (RC) and the moderating effect of friendship quality (FQ).

Methods

A six-month longitudinal design was implemented with 2,312 vocational students (Mage(T1) = 19.06; 35.55% CV prevalence, 19.26% NSSI prevalence at baseline). Data were collected at two waves (T1: December 2024; T2: June 2025) using validated scales: Cyberbullying Inventory for College Students (CICS), Adolescent Self-Harm Questionnaire, Event-Related Rumination Inventory (C-ERRI), and Friendship Quality Questionnaire (FQQ-C). Cross-lagged panel models (CLPM) and moderated mediation analyses were conducted via Mplus 8.3, controlling for gender, only-child status, and residence.

Results

CV directly predicted increased NSSI over time. RC mediated the CV→NSSI link. FQ significantly buffered the direct CV→NSSI pathway, with maximal protection observed at FQ scores = 212.3 (Johnson-Neyman analysis).

Conclusions

Cyberbullying victimization heightens NSSI risk both directly and indirectly through ruminative contemplation. High-quality friendships mitigate this pathway, offering a critical protective factor for vocational students. Interventions should target RC reduction and FQ enhancement to disrupt the CV→NSSI trajectory.