Parental discipline and affection and children's prosocial behavior: genetic and environmental links.

The authors investigated genetic and environmental contributions to the relationships between children's (N = 9,319 twin pairs) prosocial behavior and parental positivity and negativity toward them. Children's prosocial behavior was rated by parents at ages 3, 4, and 7 and by teachers at age 7. At each age, parents described their feeling...更多