Peer Victimization, Depressive Symptoms, and Substance Use: A Longitudinal Analysis

Area of Science:

• Adolescent Psychology
• Developmental Psychology
• Public Health

Background:

• Peer victimization is prevalent among adolescents and linked to substance use.
• Longitudinal studies on the psychological pathways from victimization to substance use are limited.
• This study investigates the long-term association between peer victimization and adolescent substance use, including the mediating role of depressive symptoms.

Purpose of the Study:

• To examine the longitudinal relationship between early adolescent peer victimization and mid- to late-adolescent substance use (alcohol, marijuana, tobacco).
• To determine if depressive symptoms mediate the association between peer victimization and later substance use.

Main Methods:

• Longitudinal data from 4,297 youth across three US cities (2004-2011).
• Structural equation modeling was employed to analyze the data.
• Peer victimization in fifth grade was assessed, along with depressive symptoms in seventh grade and substance use in tenth grade.

Main Results:

• Fifth-grade peer victimization significantly predicted increased depressive symptoms in seventh grade.
• Seventh-grade depressive symptoms were associated with a higher likelihood of alcohol, marijuana, and tobacco use in tenth grade.
• Peer victimization indirectly influenced tenth-grade substance use through seventh-grade depressive symptoms.

Conclusions:

• Early adolescent peer victimization has a lasting impact, increasing the risk of substance use in later adolescence.
• Depressive symptoms play a significant mediating role in the pathway from peer victimization to adolescent substance use.
• Interventions targeting peer victimization and supporting affected youth are essential.