Peer Norms Mattered More for Younger Teens, While Being Around Users Mattered More for Older Teens | Research

The takeaway

Among middle school students, perceived peer norms predicted substance use in younger adolescents, while direct exposure to peers who use became more influential as teens got older.

Read this if you want to understand how peer pressure around drugs changes as teens get older.

11,667 students tracked: peer influence shifted from perceived norms to direct exposure with age

What the researchers found

All three sources of social influence, perceived peer norms, best friend use, and being around users, predicted both alcohol and marijuana consumption across the middle school years. However, their relative importance shifted with age.

For younger adolescents, perceived norms (beliefs about how many peers use substances) were strong predictors of use. As students progressed through middle school, the influence of perceived norms declined while the influence of actually being around peers who use substances increased.

There was also an interaction effect: when adolescents spent more time around peers who drink, the predictive value of perceived norms on alcohol consumption decreased further. For marijuana, best friend use and direct exposure maintained stable influence over time while perceived norms became less important.

Why it matters

Understanding how social influence on substance use evolves across adolescence has direct implications for prevention program design. Programs targeting younger teens should focus on correcting norm misperceptions, while programs for older teens should emphasize refusal skills and strategies for navigating social situations involving substance use.

The numbers in context

11,667 adolescents from 16 schools, 5 time points (2008-2011). All three social influence sources predicted alcohol and marijuana use. Perceived norms became less influential with age while direct peer exposure became more influential.

How the study worked

The study followed 11,667 adolescents (50% female, >65% Hispanic) in 6th, 7th, and 8th grades from 16 middle schools across three Southern California school districts. Participants were assessed at 5 time points from 2008 to 2011. The analysis examined three sources of social influence on alcohol and marijuana use: perceived peer norms, best friend use, and presence of substance-using peers.

What this study cannot tell us

The sample was predominantly Hispanic from Southern California, which may limit generalizability. Self-reported substance use may be inaccurate. The study examined marijuana and alcohol but did not assess other substances. The observational design cannot establish whether peer influence causes substance use or whether substance-using teens select peers who also use.

How to read the evidence

This is a large longitudinal study with multiple time points and appropriate statistical modeling, providing moderate evidence for the developmental shift in social influence.

When this study was published

Published in 2014. Research on social influence and adolescent substance use continues, increasingly incorporating social media effects.

The bigger picture

This study demonstrates that peer influence on substance use is not monolithic. It operates through multiple channels whose relative importance shifts during development. Prevention programs that use a one-size-fits-all approach may be missing this developmental shift in social influence dynamics.

Questions still open

Would age-tailored prevention programs that shift focus from norm correction to refusal skills be more effective? How does social media influence these dynamics? Do the developmental patterns differ for different substances?

Common questions

What are perceived peer norms?

Perceived norms are beliefs about how many peers use substances and whether peers approve of use. These beliefs are often inaccurate, with adolescents typically overestimating how many of their peers use drugs or alcohol.

Why does the type of influence shift with age?

Younger adolescents are forming their social identities and are more influenced by what they believe is normal. As they get older, they gain more independence and social exposure, making direct contact with substance-using peers a more immediate influence than abstract beliefs about norms.

Read the original research

Proximal and distal social influence on alcohol consumption and marijuana use among middle school adolescents.

Drug and alcohol dependence, 144, 93-101

View on PubMed ↗Publisher’s paper ↗

Citation

Salvy, Sarah-Jeanne; Pedersen, Eric R; Miles, Jeremy N V; Tucker, Joan S; D'Amico, Elizabeth J. (2014). Proximal and distal social influence on alcohol consumption and marijuana use among middle school adolescents.. Drug and alcohol dependence, 144, 93-101. https://doi.org/10.1016/j.drugalcdep.2014.08.012