This study examined the role of sympathy, guilt, and moral reasoning in helping, cooperation, and sharing in a 6-year, three-wave longitudinal study involving 175 children (M[subscript age] 6.10, 9.18, and 12.18 years). Primary caregivers reported on children's helping and cooperation; sharing was assessed behaviorally. Child sympathy was assessed…

In one experiment, kindergartners and second and fourth graders made quantitative predictions about how many items children would share based on information about the children's previous behavior. In a second experiment, kindergartners' quantitative predictions were more consistent with the behavioral information than were their dichotomous…