Kevin M. Beaver, John Paul Wright, Matt DeLisi, Michael G. Vaughn Social Science Research http://www.sciencedirect.com/science/article/pii/S0049089X07000956 2008 Date Thu, 06/19/2014 - 11:56 AM Research Types ADD Health Delinquency Desistance Environmental Factors Genetic Influence Genetic Polymorphisms Kevin M. Beaver Marriage