This source book focuses on helping people with autism manage their behavior by analyzing the learning environment and the purpose of the behavior and then teaching new skills and behaviors. Introductory material covers the approach's philosophy and the importance of a longitudinal program plan. A section on creating a physical environment for learning looks at objectives, organization of space and time, application to other environments, and evaluation of the learning environment. The next section details elements of positive programming to encourage appropriate behavior. Key elements discussed include caring, communication, cuing, modeling, the use of natural consequences, teaching choice, desensitization/rehearsal strategies, errorless learning, relaxation training, exercise/fitness, and teaching social interaction skills. The last section offers techniques directed at specific behaviors. These include assessing the behavior, analyzing the purpose of the behavior, testing the hypothesis, positively reinforcing desirable behaviors, and decreasing undesirable behaviors while new behaviors are being learned. Briefly noted are the roles of the adults involved in the behavior change process, including parents. (DB)