Previous research has suggested that bullying victimization is associated with higher suicidal risk among young people; however, the mechanisms underlying this relation have not been well examined. The current study aimed to illuminate the developmental links between bullying victimization and suicidal ideation by examining the mediating roles of depressive symptoms, anxiety symptoms, and substance use. The study sample consisted of n = 1465 participants (51.7% male) from the normative z-proso study. Using random intercept cross-lagged panel models and three waves of longitudinal data (ages 15, 17, and 20), the hypothesized mediation effects at the within-person level were tested while partialling out between-person confounds. The results suggested that, at the within-person level, bullying victimization did not predict subsequent suicidal ideation via depressive symptoms, anxiety symptoms, or substance use. However, age 15 bullying victimization predicted within-person increases in age 17 depressive symptoms and suicidal ideation. In addition, depressive symptoms at age 15 and tobacco and cannabis use at age 17 were associated with within-person increases in bullying victimization at ages 17 and 20, respectively. The results also indicated that cannabis use and suicidal ideation were positively and reciprocally related over time. Future studies collecting data at multiple timescales are needed to understand proximal and longer-term mechanisms underlying the relation between bullying victimization and suicidality.

此前的研究表明，年轻人遭受欺凌与自杀风险较高有关。然而，这种关系背后的机制尚未得到充分研究。目前的研究旨在通过研究抑郁症状、焦虑症状和物质使用的中介作用来阐明欺凌受害与自杀意念之间的发展联系。研究样本由来自规范 z-proso 研究的n = 1465 名参与者（51.7% 男性）组成。使用随机截距交叉滞后面板模型和三波纵向数据（15、17 和 20 岁），测试了人内水平上假设的中介效应，同时部分排除了人与人之间的混杂因素。结果表明，在人际层面上，欺凌受害并不能预测随后通过抑郁症状、焦虑症状或药物使用产生的自杀意念。然而，15 岁时的欺凌行为预示着 17 岁时抑郁症状和自杀意念的增加。此外，15 岁时的抑郁症状以及 17 岁时吸烟和大麻的使用分别与 17 岁和 20 岁时人体内欺凌受害人数的增加有关。结果还表明，随着时间的推移，大麻的使用和自杀意念呈正相关且相互关联。未来的研究需要在多个时间尺度收集数据，以了解欺凌受害与自杀之间关系的近期和长期机制。