AUTHOR=Jiang Yongzhi , Chai Haifei 

TITLE=School bullying and non-suicidal self-injury: the mediating role of depression and the moderating role of social support

JOURNAL=Frontiers in Psychology

VOLUME=Volume 16 - 2025

YEAR=2025

URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2025.1557400

DOI=10.3389/fpsyg.2025.1557400

ISSN=1664-1078

ABSTRACT=ObjectiveTo explore the relationship between school bullying and non-suicidal self-injury and the roles of depression and social support among high school students from single-parent families.MethodsThe School Bullying Questionnaire, the Adolescent Non-Suicidal Self-Injurious Behavior Rating Questionnaire, the Stream Call Depression Self-Rating Scale, and the Adolescent Social Support Scale were used to investigate 312 high school students from single-parent families.Results(1) School bullying positively predicted non-suicidal self-injurious behaviors among high school students from single-parent families; (2) depression mediated the relationship between school bullying and non-suicidal self-injurious behaviors among high school students from single-parent families; and (3) social support negatively moderated the second half of the pathway and the direct pathway of this mediation model.ConclusionThere is a moderated mediating effect between school bullying and non-suicidal self-injury among high school students from single-parent families, depression is a mediating variable in the relationship, and social support mitigates the effects of school bullying and depression on non-suicidal self-injurious behavior.