My 30 year old son was just diagnosed in the Autism Spectrum Disorder. His neuropsychologist said that the term "Asperger's Syndrome" is no longer used. It is just within the spectrum. In his case, the evaluation was over 2 days, and cost $4650. The spectrum is so wide, that some on the borders just don't get identified until later years. But the evaluation is necessary to get life pointed in the right direction.