The manual contains instruction for behavioral assessment of developmentally disabled, moderately and severely retarded individuals. Each unit includes the following information: a goal statement, specific behavioral objectives, and approximate time required to read the unit and complete all the exercises. Among the topics discussed are task analysis, data collection, and examination of a student record file. The first of two supplements provides information on formal tests, including the Stanford-Binet and the Vineland Social Maturity Scale. The second supplement, a revised case study manual for community centered programs for mentally retarded and seriously handicapped persons, provides examples of such records as medical histories, psychological evaluations, and parent-teacher conference reports. (CL)