Diagnosis (Subscribe)
Links
Autism, Asperger's Syndrome and Semantic-Pragmatic Disorder
http://www.mugsy.org/bishop.htm
Paper on defining the boundaries.
Diagnosis of Autism in Children With Down Syndrome by Glen Vatter
http://www.altonweb.com/cs/downsyndrome/index4.html?page=autism.html
Detailed comparison of the symptoms of the two conditions, and a discussion of issues in diagnosis.