Can autism be detected at 18 months? The needle, the haystack, and the CHAT.

  title={Can autism be detected at 18 months? The needle, the haystack, and the CHAT.},
  author={S. Baron-Cohen and J. Allen and C. Gillberg},
  journal={The British journal of psychiatry : the journal of mental science},
Autism is currently detected only at about three years of age. This study aimed to establish if detection of autism was possible at 18 months of age. We screened 41 18-month-old toddlers who were at high genetic risk for developing autism, and 50 randomly selected 18-month-olds, using a new instrument, the CHAT, administered by GPs or health visitors. More than 80% of the randomly selected 18-month-old toddlers passed on all items, and none failed on more than one of pretend play… Expand
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