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This literature summary, using meta-analysis, compares the influence of parents versus peers on substance use. The data indicated that the average relationship for peer effects on substance use was larger than the effect for parental influence. Several moderating influences (such as youth age and type of substance) are considered. The findings indicate that the relative size of parental and peer influence varies with the age of the adolescent and the type of substance. The results indicate that both parents and peers influence decisions about substance use. Future educational interventions concerning substance use should consider how best to combine these two sources of influence.
Allen et al. (Tue,) studied this question.