The authors examine the importance of the person-context nexus in adolescent deviance. Using the nationally representative National Longitudinal Study of Adolescent Health (Add Health) data set of more than 20,000 male and female adolescents, the authors are interested in testing whether the relationship between impulsivity and a variety of deviance measures varies as a function of neighborhood disadvantage. Results suggest that whereas levels of impulsivity and deviance vary by level of neighborhood disadvantage, relationships between impulsivity and 511 Downloaded from deviance do not. This same finding is made for both male and female study participants, though there is some modest evidence of moderation in female youth. Together, these results have important implications for social disorganization theory, the general theory of crime, and for personality research on the etiology of crime and deviance.

This article suggests that undergraduate research can help advance the science of psychology. We introduce a hypothetical "question-list paradigm" as a mechanism to do this. Each year, thousands of undergraduate projects are completed as part of the educational experience. Although many of these studies may not contain sufficient contributions for publication, they provide a good test of the replicability of established findings across populations at different institutions and geographic locations. Thus, these projects could meet the needs of recent calls for increased replications of psychological studies while simultaneously benefiting the student researchers, their instructors, and the field in general.

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Using the National Longitudinal Study of Adolescent Health, this study examined the impact of school-level smoking and drinking on adolescent-peer similarity for smoking and drinking. Hierarchical linear modeling revealed that adolescent-peer similarity was significantly moderated by school-level substance use for both tobacco and alcohol use. For tobacco, similarity between adolescent and peer use increased from .18 in the lower quartile of tobacco-using schools to .44 in the upper quartile of tobacco-using schools. Corresponding similarities for alcohol use ranged from .25 to .34. These results suggest that schools with relatively few substance-using peers provide less opportunities for adolescents to pick niches that expose them to risk factors that correspond to their own substance-use behaviors.

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