Being serious, I couldn't say. I'm a girl, but I fit the asperger's stereotype down to a tee - every little thing it'll say about it in the textbooks was me - so in my case, it wasn't that I was more social or communicative or whatever than anyone else on the spectrum. Sure, I'd try to be social, but it tended to flop so badly that I adopted a corner where I'd sit by myself and read all through every lunch hour on my own.
I guess perhaps it's that girls are often more talkative and empathetic than boys, as a gender-specific generalisation, and that perhaps that comes through in aspergian girls too, so they don't get it picked up as obviously in milder cases as much as boys would?
I was going through some old school stuff clearing it out the other day though, and found a piece of paper that was basically a survey on how you learn best. My school was big on 'learning styles that benefit the individual student' and not having everyone sitting up in the fluoro lights listening to a teacher etc. My survey, as I'd filled it out as a ten year old, could have been a perfect profile of an aspie kid... prefers learning on own, hates distractions, strongly prefers visual learning over anything else, etc etc (it went on a while) - yet none of my teachers picked it up at the time. I gave the piece of paper to my mother who took it to her work (she works with autistic kids around the region) and they've decided to do some seminars with teachers to highlight the fact that those sorts of sheets could be a really good early indicator of kids on the spectrum. Looking at my answers I'm stunned nobody picked it up by looking at it!!
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We are a fever, we are a fever, we ain't born typical...