Based on extensive field-testing and the dual principles that problem behavior often serves a purpose for the individual displaying it and that intervention should take place in the community, this user-friendly manual details methods for conducting functional assessments, communication-based intervention strategies, procedures for facilitating generalization and maintenance, and crisis management tactics. Useful for handling intense behavior problems, this book will be invaluable for educators, supported employment and group home staff, behavior specialists, psychologists, social workers, physical and occupational therapists, medical staff, speech-language pathologists, family members, and others working with people who have developmental disabilities. Also included are case studies and checklists of things to do to ensure success.