Delinquency in gangs - Selection or socialization?

Thornberry, Krohn, Lizotte, and Chard-Wierschem's (1993) introduced three models to account for why gangs are associated with high levels of delinquency. Existing research using Thornberry et al.'s (1993) models to explain the gang-delinquency association has been inconclusive. This paper seeks to address this gap in research by incorporating Moffitt's (1993) developmental taxonomy of delinquency within Thornberry et al.'s (1993) explanatory models. A few proposals are put forth in this paper: (1) support for Thornberry et al.'s (1993) models depends on developmental stage of the individual, (2) the selection model explains delinquency of life-course-persistent gang members, while social facilitation model explains delinquency of adolescence-limited gang members, and (3) support for the enhancement model is an artifact of assuming a homogenous gang sample.