hmm well I was specifically referring to the standardized IQ test which really doesn't diagnose autism, it is just a way of stratifying those who have the syndrome and looking at potential issues where intelligence is concerned. It is a test that can be administered to every member of the populace and just because a person who isn't affected by autism scores lower than average doesn't mean they are autistic. In fact someone with autism or aspergers could conceivably score higher than someone without the syndrome.