I [quote]know the Asperger's diagnosis was disputed in one official report I read. It's frustrating that the same label gets used for Martin Bryant (IQ 66) as many other completely different people.
How do I explain this to people to correct misconceptions?[/quote]
Perhaps address the IQ issue directly:
An IQ (measurement of cognitive ability) of 66 indicates lack of cognitive development.
According to the DSM IV, In Asperger's Syndrome, there is "no clinically significant delay in cognitive development.... Also, it seems well recognized that in order to qualify as an AS person, one must have an average or above average IQ.