This handbook provides information on various techniques and strategies that can reduce excessive behaviors and improve deficit behaviors in children with autism. Chapter 1 gives an overview of autism and discusses the development of social skills and play skills in individuals with high-functioning autism. The characteristics of children with Asperger's syndrome, the phenomena of hyperlexia, and the relationship of autism to mental retardation are also reviewed. The final section of Chapter 1 discusses research regarding behavior modification techniques as applied to individuals with autism. Chapter 2 presents techniques to increase and improve the social and communication skills of children with Asperger's syndrome. Interventions, such as integrated play groups and social reading strategies, are outlined and behavior modification techniques are presented. Chapter 3 provides a case study of a five-year-old boy with autism. His diagnosis and current educational placements are described. Appendices include the diagnostic criteria for autistic disorder, Asperger's disorder, and mental retardation; observation forms used in the case study; a bibliography of storybooks that can be used to increase vocabulary and comprehension skills; a sample lesson plan; and the suggestions of a speech and language pathologist for helping the boy develop better socialization skills. (Contains 58 references.) (CR)