What can psychology contribute to the understanding of intellectual disabilities and how does clinical psychology help in supporting people with these disabilities? This is the first book to provide a comprehensive overview of concepts and problems, as well as covering the clinical and consulting skills that support interventions in this field. Starting from basic issues of epidemiology and cause, the authors consider issues raised when mental health problems co-occur, when sexual abuse is alleged, and when a person's behaviour is found to challenge the resources of the people or services providing support. The authors examine the family context, and how to address it, and also the organizational context and how to understand and work within it (including its legal aspects). Finally, they consider health promotion issues, and how to work with families and communities to improve the wellbeing of people with intellectual disabilities. This is a truly comprehensive text, written out of both rich clinical experience and extensive knowledge of research and training. It will be invaluable for students and practitioners in many disciplines that are involved in the field of intellectual disability. "This exceptionally well-organized and comprehensive book goes beyond the typical approach to this topic by providing state-of-the-art advice that emphasizes multiple perspectives on assessment and intervention. The material is practical and systems orientated, and reflects a maturity and wisdom stemming from lengthy experience with this population. Highly recommended as a source of useful information and support." Professor Edward Carr, Suny at Stony Brook, New York, USA "a terrific book ... Eric Emerson and his colleagues have brought together leading experts to give clear expositions of wide ranging and complex topics. This book deserves to be and will undoubtedly become the standard text for trainee and qualified practitioner alike." Professor David Felce, Welsh Centre for Learning Disabilities, University of Wales College of Medicine