Autism spectrum disorder is not as certain as implied

BMJ 2003; 326 doi: https://doi.org/10.1136/bmj.326.7396.986 (Published 03 May 2003) Cite this as: BMJ 2003;326:986
  1. David Simpson, consultant child and adolescent psychiatrist (dsimpson@tavi-port.nhs.uk)
  1. Tavistock Clinic, London NW3 5BA

    EDITOR—Szatmari's editorial implies more certainty about the existence of an autism spectrum and causes of autism than is warranted.1 Debate remains about the validity and usefulness of a broad definition of autism.2

    Autism and Asperger's syndrome are distinct, and although they share common difficulties in social relatedness and obsessiveness, they can be distinguished …

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