Similar effects of familial liability and maltreatment were observed in the COGA sample (panel B); however there was much greater separation between SRM and URM than between URM and absence of maltreatment. Clearly, children with higher levels of familial loading for an antisocial disorder were more likely than their lower-risk counterparts to experience maltreatment, and this strongly suggested the presence of correlated genetic and environmental risks operating in this clinically-ascertained sample.
