A major limitation of this study is that the methodology does not allow a conclusion regarding the salient factors responsible for the observed changes in self-concept. The question is whether the specific characteristics of PPC are responsible for the changes seen or if there are other variables, such as staff quality, safe placement, and separation from a destructive environment. Previous suggestions include future research to compare a variety of setting and treatment modes to address this issue, research to determine which elements in the program produced the change, and research comparing different treatment modalities. There is agreement on these issues, however, the time and expense of these future endeavors are cited. Another question was whether some client characteristics may relate to successful or unsuccessful completion of a PPC intervention program. The findings of the study do suggest that there are no significant differences in effectiveness for the variables of gender and race. However, this question will be addressed in future research by examining such factors as type of offense, chronicity, personality characteristics, and family characteristics of the clients. Finally, data are being collected on recidivism, successful integration back into the family, quality of peer relationships, school performance, and personal adjustment. Staff ratings and client self-ratings of degree of change and success in the program are other potential sources of outcome data that may be utilized. 2 references.