I don’t have any breakdown on the numbers, but it seems to me that if introversion is more about lack of desire to socialize and AS is more about inability to socialize, they don’t necessarily need to be correlated, although they may very well be.
Wikipedia quotes diagnostic criteria for AS that focus on ‘impairment’ and ‘repetitive, stereotyped behavior,’ which sounds like it’s just based on ability, not desire/introversion. That’s consistent with your hunch.
I also skimmed for studies correlating AQ (Autism-Spectrum Quotient) with introversion, and discovered the AQ is built from 5 question types, one of them testing social skills. But the social skill questions don’t just test for ability (#36, ‘I find it easy to work out what someone is thinking or feeling just by looking at their face’), they test for desires too (#1, ‘I prefer to do things with others rather than on my own’). (Source is Simon Baron-Cohen’s paper about the AQ.) So I’d expect the social skill subtest to tap into introversion as well as social ability, which would make the AQ correlate with extroversion/introversion (and it does).
I expect the correlation of AS with introversion depends how you measure Asperger-ness. The binary criterion ‘diagnosed with Asperger’s’ probably has a weak correlation; the AQ scale would have a better one. It’s interesting that AS diagnosis criteria are based just on social ability, while the AQ scale tests far more than that—that suggests the AQ is measuring quite a lot more than Asperger-ness.
(I also found a forum called Typology Central, ‘a personality type indicator community.’ For some reason the idea of a forum for discussing personality types makes me giggle.)
Wikipedia quotes diagnostic criteria for AS that focus on ‘impairment’ and ‘repetitive, stereotyped behavior,’ which sounds like it’s just based on ability, not desire/introversion. That’s consistent with your hunch.
I also skimmed for studies correlating AQ (Autism-Spectrum Quotient) with introversion, and discovered the AQ is built from 5 question types, one of them testing social skills. But the social skill questions don’t just test for ability (#36, ‘I find it easy to work out what someone is thinking or feeling just by looking at their face’), they test for desires too (#1, ‘I prefer to do things with others rather than on my own’). (Source is Simon Baron-Cohen’s paper about the AQ.) So I’d expect the social skill subtest to tap into introversion as well as social ability, which would make the AQ correlate with extroversion/introversion (and it does).
I expect the correlation of AS with introversion depends how you measure Asperger-ness. The binary criterion ‘diagnosed with Asperger’s’ probably has a weak correlation; the AQ scale would have a better one. It’s interesting that AS diagnosis criteria are based just on social ability, while the AQ scale tests far more than that—that suggests the AQ is measuring quite a lot more than Asperger-ness.
(I also found a forum called Typology Central, ‘a personality type indicator community.’ For some reason the idea of a forum for discussing personality types makes me giggle.)