Examines the capability and motivation of 18- and 24-month-old infants to share, help, comfort, and cooperate with their older siblings; the frequency of such prosocial behavior by both siblings; and the children's response to sibling distress. The relationship between prosocial and conflict behavior was also studied. (HOD)

Investigates whether children's use of reasoning differs in child-child and adult-child discussions of moral dilemmas. Supports Piaget's contention that moral discussions with peers feature a more spontaneous use of reasoning than do discussions with adults. (HOD)

This study sought to validate two measures of social cognitive development: a measure of conflict resolution (Shantz and Shantz, 1982), and a social rule measure (Shantz, 1982). Participants were 214 kindergarten through fourth grade children from two suburban schools, one a public school and the other a Catholic parochial school in the Chicago…