The updated edition of this classic account of autism includes a new chapter outlining recent developments in neuropsychological research, and overviews one of the most important theoretical and practical consequences of Frith's original insights into this puzzling condition.

• Updated edition of this classic account of autism.
• Includes new sections covering practical and theoretical developments, and a chapter on recent investigations of the neurological basis of psychological impairments in autism.
• Accessible to a broad general readership.