Collateral social development accompanying reinforcement of outdoor play in a preschool child.

A 3-yr-old preschool girl with deficits in both motor and social repertoires was socially reinforced by teachers for use of outdoor play equipment, as a contribution to her motor skills and as a tactic to produce increased social contact with other children. Her use of outdoor play equipment, and various examples of her social interaction with both teachers and children were scored in the course of experimental development and analysis of her rate of equipment use. Equipment use increased greatly under the social reinforcement contingency; certain desirable examples of social interaction with other children showed a collateral development; other examples of adult-oriented development remained constant; and one class of undesirable baby-like behavior decreased markedly. Thus, the study provided a picture of what other behavior changes may take place in the course of behavior modification aimed at a single response class.