The monograph advances a conceptual framework for the evaluation of mental health services provided to chronically mentally ill persons by psychosocial rehabilitation programs. Evaluation mechanisms consistent with the philosophy and programmatic aims of psychosocial rehabilitation programs are identified. An introductory section provides a brief history of the psychosocial rehabilitation movement, proposes a conceptual framework, and highlights existing evaluation publications which may be of use to program administrators. The next five sections describe components of a comprehensive evaluation strategy, focusing on the following dimensions of psychosocial rehabilitation programs: (1) input (agency mission, client characteristics and needs, staff competencies, financial condition); (2) process (program practices, program connectedness, match to need); (3) output (productivity evaluation, staff productivity); (4) outcome (client satisfaction, family satisfaction, client outcomes); (5) output/outcome (cost effectiveness, cost/benefit analysis). Within each section, relevant literature is reviewed, specific techniques described, methodological concerns aired, and resource constraints noted. The final section discusses the implications of evaluation, including the uses of information to improve services, the role of "inside" versus "outside" evaluation, and the potential future directions that evaluation is likely to take. A bibliography and appendix containing a client evaluation survey conclude the document. (JW)