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J Abnorm Child Psychol. 2008 Jan;36(1):81-94. Epub 2007 Jul 31.

Alcohol use in adolescent twins and affiliation with substance using peers.

Author information

  • 1Department of Psychology, University of Virginia, P.O. Box 400400, Charlottesville, VA 22902, USA. jeh8s@virginia.edu

Abstract

Affiliation with substance using peers is one of the strongest predictors of adolescent alcohol use. This association is typically interpreted causally: peers who drink incite their friends to drink. This association may be complicated by uncontrolled genetic and environmental confounds because teens with familial predispositions for adolescent substance use may be more likely to select into social networks where drinking is common. We test this alternative hypothesis using a sample of 1,820 twin and sibling pairs, and their same-sex best friends, from three waves of the National Longitudinal Study of Adolescent Health. Across all three waves, peer report of substance use did not influence adolescent alcohol use when genetic and shared environmental predispositions for drinking were considered. The association between alcohol use and peer behavior may be a spurious association attributable to a shared genetic liability to drink alcohol and associate with peers who drink alcohol.

PMID:
17665304
PMCID:
PMC2905232
DOI:
10.1007/s10802-007-9161-0
[PubMed - indexed for MEDLINE]
Free PMC Article
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