Matt DeLisi, Kevin M. Beaver, John Paul Wright, Michael G. Vaughn Journal of Criminal Justice http://www.sciencedirect.com/science/article/pii/S0047235208000421 2008 Date Thu, 06/19/2014 - 12:07 PM Research Types ADD Health Arrest Genetic Polymorphisms Kevin M. Beaver Low-Risk Environment Onset of Crime Police Contacts