The prosocial functions of early social emotions: the case of guilt.

To safeguard human cooperation, it is vital that when cooperative relationships break down, they are repaired. This requirement is met by the social emotion of guilt, at two levels: the experience of guilt motivates transgressors to repair the damage they have caused, and transgressors' displays of guilt appease victims and bystanders and elicit cooperation toward the transgressor. I review recent evidence that guilt functions in both of these ways from early in development. The experience of guilt motivates reparative behavior in children 2-3 years of age, and transgressors' displays of guilt appease and elicit cooperation in children 4-5 years of age. Thus, over the first few years of ontogeny, guilt becomes an important mechanism for upholding cooperation.