School-Based Peer Effects and Juvenile Behavior
利用十年级学生样本，检验同伴群体对吸毒、饮酒、吸烟、去教堂和辍学倾向的影响，发现学校层面存在显著的同伴效应，但内生性偏误仅存在于部分行为中。
We use a sample of tenth-graders to test for peer-group influences on the propensity to engage in five activities: drug use, alcohol drinking, cigarette smoking, church going, and the likelihood of dropping out of high school. We find strong evidence of peer-group effects at the school level for all activities. Tests for bias due to endogenous school choice yield mixed results. We find evidence of endogeneity bias for two of the five activities analyzed (drug use and alcohol drinking). On the whole, these results confirm the findings of previous research concerning interaction effects at the neighborhood level. © 2001 by the President and Fellows of Harvard College and the Massachusetts Institute of Technology