In two experiments, children between l l /2 and 7 l /2 years of age were tested on a predicted, eight-step sequence of the development of social roles. Performance on this sequence was related to two measures of more spontaneous behavior. Nearly all children fit the predicted sequence perfectly. By 2 years of age, most children could make a doll act as an independent agent. The majority of 3-yearolds could make a doll carry out several behaviors fitting the role of doctor. At age 4 or 5, most children developed the capacity to show a social role, making a doctor doll interact with a patient doll. The intersection of social roles for two agents appeared at about age 6: A man doll could be both doctor and father to a patient who was also his daughter. In their spontaneous behavior, early preschoolers almost always showed the highest step that they were capable of, but beginning with the step for social roles, late preschoolers seldom showed their highest step.For children to act and feel socially competent, they need to understand roles such as mother, father, doctor, and patient. Despite the importance of these social roles in the child's life, the development of social roles in the preschool years is, at best, only vaguely understood. The several previous studies of social-role development have concluded that children do not really understand social roles until 7 or 8 years of age (