Perfect for undergraduate and graduate students, new clinicians, and beginning researchers, this accessible resource gives readers an introduction to challenging behavior in people with disabilities. Drawing on the latest research and published literature, the book provides a succinct overview that helps readers understand challenging behavior and presents an evidence-based approach that lays out the essential principles readers will use to create effective assessment and intervention plans. Three internationally known experts introduce readers to: * individual traits, social contexts, and environmental factors that influence development and various forms of challenging behavior, including aggression, self-injury, and extreme tantrums. * ethical and quality of life issues often encountered in home, school, and community settings. * issues related to the assessment of challenging behavior, including separate chapters on health and medical screening and functional assessment. * the relationship between assessment and intervention. * guidelines on implementing an intervention plan effectively.