New edition of a text which presents to students and practitioners in the helping professions the knowledge, skills, and procedures to evaluate their own practices. Focuses on single-system designs, which are systematic ways of analyzing, measuring, and evaluating practice, with an emphasis upon conceptualizing and measuring client and client/system targets and goals, designing an evaluation, and analyzing the ongoing data to supply corrective feedback. Provides both research and practical background for such methods. Includes two personal computer programs in the Windows format designed to assist practitioners. Annotation c. by Book News, Inc., Portland, Or.