An interesting type of chart, not sure exactly why they thought that this sort of visual representation would be more a appropriate that something, well, more appropriate, but I guess it sums it up pretty well.
Here are a few others:
Those last four are actual tools used to assist in diagnosing Asperger's syndrome and High Functioning Autism, developed by some of the foremost experts in the field.
All you doubting Thomas's can now shut your mouth.