Diagnosis and definition of autism and other pervasive developmental disorders / Fred R. Volkmar and Catherine Lord -- Epidemiological surveys of autism / Eric Fombonne -- Psychological factors in autism / Margot Prior and Sally Ozonoff -- Genetic epidemiology of autism and other pervasive developmental disorders / Peter Szatmari and Marshall B. Jones -- Neurobiology of autism / Fritz Poustka -- Psychopharmacology / Christopher J. McDougle -- Behavioural and educational approaches to the pervasive developmental disorders / Sandra L. Harris -- Outcome in adult life for people with autism and Asperger's syndrome / Patricia Howlin and Susan Goode -- Autism and the evolution of human social skills / Lynn Waterhouse and Deborah Fein.