To understand the developmental bases of moral-rational behavior in children, the effectiveness of four training paradigms in modifying social behavior was compared. The specific behavior studied was that of taking-turns in situations where mutual assistance was necessary in order for either of two children to receive prizes. The four training…

Six experiments were designed in order to compare the cooperative and competitive interaction of five-year-olds with that of older children up to age 10. For all experiments, children of the same age and same sex were matched in dyads. The children played various two-person games where they could obtain prizes in a variety of reward contingency…