The PRYDE program is described as a foster family-based treatment program which has treated a wide diversity of seriously disturbing child behaviors since 1981 with a 70% success rate of discharging children to less restrictive settings. Children are treated individually within separate families and local communities, thus avoiding problems associated with group residential settings. Foster parents are trained to function as highly qualified treatment agents by using a variety of teaching, motivational, and relationship-building skills. They document daily use of these skills according to an individualized treatment plan. Supervision and in-home training are conducted by a parent supervisor, who also provides 24-hour on-call services to parents. The bulk of the document consists of detailed case studies of three children ages 6, 11, and 18 which illustrate how family-based treatment can be highly individualized for children with widely differing presenting problems. (Nine figures are provided.) (JW)