This monograph is the third of a trilogy of studies on the Unitas Therapeutic Community, a program that attempts to strengthen the competencies of the Hispanic and Black youngsters living in the Longwood/Hunts Point section of the South Bronx, New York City. The program uses indigenous nonprofessionals as surrogate parents, uncles, and aunts for youth 5- to 16-years-old living in the same neighborhood, often on the same street. A symbolic family is created that supplements the children's frequently unstable natural families. This report presents a psychotherapeutic evaluation of Unitas that attempts to examine how 117 children who participated in the program (most of whom were Hispanic) changed as a result of their Unitas experience. The theoretical context and the methodology of the evaluation are discussed. The evaluation consists of the following components: (1) a descriptive sociodemographic, psychosocial, and academic study of Unitas children in May-June 1983; (2) a psychosocial longitudinal comparison of Unitas and Police Athletic League (PAL) youngsters, conducted first at the beginning of July 1983 (pretest), and then again at the end of August 1983 (posttest); and (3) a behavioral assessment process study of the Unitas circle meetings carried out during the 6-week summer program of July-August 1983. Data are presented on 14 tables and figures. Five lists of 113 references are provided. (BJV)