The Handbook of Intellectual Disability and Clinical Psychology Practice will equip clinical psychologists in training with the skills necessary to complete a clinical placement in the field of intellectual disability. Building on the success of the previous edition this handbook has been extensively revised. Throughout, the text, references, and website addresses and have been updated to reflect important developments since the publication the first edition. Recent research findings on the epidemiology, aetiology, course, outcome, assessment and treatment of all psychological problems considered in the book have been incorporated into the text. Account has been taken of changes in the diagnosis and classification of intellectual disability and psychological problems reflected in the AAIDD-11 and the DSM-5. New chapters on the assessment of adaptive behaviour and support needs, person-centred active support, and the assessment of dementia in people with intellectual disability have bee