What are the historical foundations of autism & what precisely is meant by the 'autistic spectrum'? How can we explain behavioural patterns of people with autism young or old & what are the major theoretical bases for understanding these? What is the latest thinking regarding diagnosis & what are the most effective strategies for assessment education & care for people with this condition? Following on from the popular provocative first edition the Second Edition answers these questions with the latest research on autistic spectrum disorders exploring theories at the psychological neurobiological & 'first cause' levels to methods of assessment intervention education & support Already popular as an introductory text for those wanting to know more about autism as well as a source of basic information & references for those familiar with the field this newly updated & enhanced book is invaluable for students professionals & even families