网络欺凌对大学生自杀意念影响的交叉滞后分析

The cross-lagged study between cyberbully and suicidal ideation among college students

目的了解网络欺凌与大学生自杀意念的因果关系及内在发生机制,为有效干预大学生自杀行为提供纵向证据。方法基于一般压力理论,采用纵向设计,使用受网络欺凌行为问卷、自杀意念量表以及流调用抑郁自评量表(CES-D)对北京市和西安市4所高校的558名大学生进行2次追踪测试,建构以抑郁为中介的交叉滞后模型。结果交叉滞后分析结果表明,前期网络欺凌正向预测了后期大学生的抑郁症状和自杀意念(β值分别为0.06,0.15,P值均<0.01),且前期抑郁正向预测后期自杀意念(β=0.29,P<0.01);前期抑郁在前期网络欺凌与后期大学生自杀意念之间发挥中介效应。跨群组分析显示,网络欺凌、抑郁与自杀意念之间的纵向中介关系存在性别差异,即女生比男生更易受到网络欺凌的影响,且更易产生抑郁情绪与自杀意念。结论网络欺凌与大学生自杀意念之间存在纵向因果关系,依据性别干预大学生的抑郁情绪对自杀行为具有一定的实践意义。

Objective To provide longitudinal evidence for interventions in suicidal behavior among college students,this study explored the mechanisms underlying the relationship between cyberbully.Methods Based on the general strain theory,558 college students from Beijing and Xi’an were followed up 2 times(T1 and T2)by using the Cyberbullying Questionnaire,Beck Scale for Suicide Ideation and Center for Epidemiological Survey-Depression Scale(CES-D).Results T1 cyberbully could positively predict depression and suicidal ideation among college students at T2(β=0.06,0.15,P<0.01),and depression at T1 could positively predict suicidal ideation among college students at T2(β=0.29,P<0.01).The mediation effect revealed that depression at T1 could mediate the relationship between cyberbully and suicidal ideation.Compared to boys,girls were likely to be affected by cyberbully and resulted in depression and suicidal ideation.Conclusion Findings contribute to the prespective causal relation between cyberbullying and suicidal ideation among college students and provide the longitudinal evidence for intervention of suicidal ideation.