
The CHAT - Reproduced from:
Baron-Cohen S.; Allen J.; and Gillberg C. (1992) Can autism be detected at 18 months? The needle, the haystack,and the CHAT. Br J Psychiatry 161: 839-43.
Baron-Cohen, S.; Cox, A.; Baird, G.; Swettenham, J.; Nightingale, N.; Morgan, K.; Drew, A. and Charman, T. (1996) Psychological markers in the detection of autism in infancy in a large population. Br. J. Psychiatry. 168:158-163.





