Jean McGloin’s research focuses on peer influence processes. This program has focused on developing new theoretical explanations of peer influence, the role of peer network structure in shaping delinquency, and the extent to which individual characteristics (e.g., immigrant status, gender) condition peer influence.  She is currently working on papers addressing the extent to which the larger social context of schoolmates' delinquency affects the strength of the peer group's influence on delinquency.  This research program typically uses the AddHealth data to investigate these questions, which provides ample information on adolescents' social networks, though not exclusively.