Sensation-seeking as a moderator of the effects of peer influences, consistency with personal aspirations, and perceived harm on marijuana and cigarette use among younger adolescents.

Concurrent effects of peer influence and protective cognitive variables on marijuana and cigarette use are hypothesized to be contingent on adolescent sensation-seeking. The hypothesis was tested in 1999-2000 using a survey given to eighth graders (N=3127) in 20 U.S. middle schools. Results largely supported the hypothesis that peer pressure and perceived peer marijuana use had only a relatively trivial effect on low sensation-seekers and a much greater effect on high sensation-seekers. In addition, aspirations inconsistent with marijuana use appeared protective for high sensation-seekers.