I think the article is incorrect. A better article on it is at http://www.sciencedaily.com/releases/20 ... 101406.htm
EarthTimes article wrote:
Researchers at the University of New South Wales in Sydney are incorporating both psychological and biological factors to detect autism.
ScienceDaily article wrote:
ScienceDaily (Jan. 18, 2008) — A new way of understanding autistic disorders, incorporating both psychological and biological factors, could lead to the conditions being picked up earlier, research from UNSW has found.
All it seems to say is that biological testing could result in autism being diagnosed sooner. It looks like they are suggesting brain scans be used.