“…Family factors, including genetics, significantly affect children’s risk of drug abuse, delinquency, and other problem behaviors [6, 7, 8, 9, 10], and children of drug-abusing parents are frequently exposed to elevated levels of genetic and environmental family-related risks [3, 4, 11, 12]. With respect to environmental risks, the lives of children of drug abusers are characterized by high parent and family conflict, frequent moves, household financial troubles, and family legal conflicts [13, 14, 15, 16, 17].…”