This book reviews clinical models for working with developmental disability and behavioural problems. The first section explores the causes and nature of behaviour problems in people with physical, learning, language and sensory disabilities, and some key specific conditions. The second section describes the assessment approaches that clinicians will find most useful in evaluating behaviour. The third section covers treatment approaches emphasising the importance of a broad, eclectic approach. The contributors, all acknowledged experts in their fields of paediatrics, psychology and psychiatry, provide a comprehensive overview of this set of major challenges, emphasising the importance of auditory detection, understanding, measurement and treatment.