American Psychiatric Association (1994) Diagnostic and Statistical Manual of Mental Disorders (4th edn) (DSM-IV). Washington, DC: APA.
Goodman, W. K., Price, L. H., Rasmussen, S. A., et al (1989) The Yale–Brown Obsessive Compulsive Scale I: development, use and reliability. Archives of General Psychiatry, 46, 1006–1011.
Happe, F. G. E. (1994) Annotation: current psychological theories of autism: the “theory of mind” account and rival theories. Journal of Child Psychology and Psychiatry, 35, 215–229.
Howlin, P. (1997) Autism: Preparing for Adulthood. London: Routledge.
Le Couteur, A., Rutter, M., Lord, C., et al (1989) Autism Diagnostic Interview: A semi-structured interview for parents and caregivers ofautistic persons. Journal of Autism and Developmental Disorders, 19, 363–387.
Lord, C., Rutter, M. & Le Couteur, A. (1994) Autism Diagnostic Interview – Revised: a revised version ofa diagnostic interview for caregivers of individuals with possible pervasive developmental disorders. Journal of Autism and Developmental Disorders, 24, 659–685.
Marks, M. (2003) Cognitive therapy for obsessive compulsive disorder. In Obsessive Compulsive Disorder: Theory, Research and Treatment (eds Menzies, R. G. & De Silva, P.), pp. 275–290. Chichester: Wiley.
McDougle, C. J., Kresch, L. E., Goodman, W. K., et al (1995) A case–controlled study of repetitive thoughts and behaviour in adults with autistic disorder and obsessive–compulsive disorder. American Journal of Psychiatry, 152, 772–777.
McDougle, C. J., Kresch, L. E., Posey, D. J. (2000) Repetitive thoughts and behavior in pervasive developmental disorders: treatment with serotonin reuptake inhibitors. Journal of Autism and Developmental Disorders, 30, 427–435.
Ozonoff, S., Pennington, B. F. & Rogers, S. J. (1991) Executive function deficits in high-functioning autistic individuals: relationship to theory of mind. Journal of Child Psychology and Psychiatry, 32, 1107–1122.
Rachman, S. & De Silva, P. (1978) Abnormal and normal obsessions. Behaviour Research and Therapy, 16, 233–238.
Savage, C. R., Baer, L. & Keuthen, N. J. (1999) Organizational strategies mediate nonverbal memory impairment in obsessive–compulsive disorder. Biological Psychiatry, 45, 905–916.
Wechsler, D. (1981) Manual for the Wechsler Adult Intelligence Scales – Revised. San Antonio, TX: Psychological Corporation.
World Health Organization (1992) The ICD–10 Classification of Mental and Behavioral Disorders. Geneva: WHO.