I'm probably going to find this thread too esoteric, but I can see one important thing which hasn't been mentioned yet - when the trauma occurs at an early age, say before 3 years old, when the brain hasn't developed any coping strategies yet, it is going to leave its mark one way or another.
We are all familiar with "brain maps", those diagrams which show which areas of the brain surface deal with which mental functions. Isn't it surprising how everybody's brain turns out to have the same map? - to which the response is that they don't, quite. There must be a developmental plan, presumably programmed into the DNA, and if the plan is not disrupted, you turn out "normal". But if the plan is disrupted, and your coping strategy isn't working, you end up with the layout of the brain map "wrong". How wrong is very difficult to say, it's certainly not uni-dimensional.
Anyway Prof Asperger noticed some young kids who showed common symptoms of not engaging in communication normally, like the majority of their cohort. They were clearly somewhat like Autistic kids, who really stick out behaviorally, and so that got labeled Asperger's Syndrome.
The more carefully you watch for kids diverging from "the plan", the more you can see this happening, although getting the very early steps right results in a more "normal" personality. This gives rise to the label Asperger's Spectrum, although that makes it sound like the problem is uni-dimensional, when in fact there are many interdependent aspects to the plan that occur in parallel.
So although people affected by Asperger's Spectrum Disorder can turn out different in a wide variety of ways, and can seemingly all cope well enough that they don't have to be "looked after" in life, they are nevertheless not "normal".
One common characteristic is that they tend to be loners - they don't get as much pleasure out of just being with people. How many times times have you heard someone say "I enjoy my job as a shop assistant because I enjoy meeting new people." ? I don't ever spend a second on thinking about shop assistants, they are just faceless entities one has to deal with in the mundane process of shopping - worth a "Thank you" at the end, but that's all.
Another is a lack of proper respect for your boss, and other authority figures. You are not supposed to speak out on something which reflects badly on your boss, especially if it is in front of HIS boss, even if it is true. This is labeled "Oppositional Defiance Disorder", and you are a "difficult" person.
Another is feeling more at home with computer programming, the cold hard logic of Logic - I was amazed when I heard on the radio that there is an acknowledgement of this in Silicon Valley. They have realized that some people with "difficult personalities" make fantastic programmers if you don't put them in an open plan roomful of programmers, but let them have their own office, where they can keep the door shut.
Obviously the above all applies to me, but can anyone else here recognise some of those aspects in themselves?

It might also be extrapolated from that that preferring to have conversations on the Diner, as opposed to face to face at a bar, selects for a certain type of personality. Conversations are presented in themed threads, even though they may wander dramatically. And what is written stays on the record and can be quoted back at people. All very satisfying to a tidy mind.
Here I was going to pull up a quote, but I can't find it because I split the thread and somebody else moved it somewhere else. But paraphrasing, 'Palloy is clearly an intelligent asshole (Thank you) but is still an asshole (I really haven't the least idea what you mean)'.
We certainly have I higher than normal proportion of loners and difficult personalities (assholes) here at the Diner, as you might expect from the above. I suppose we have to just live with the assholes. (RE would stick a "LOL" on the end of that, but I never find his flippancy worth laughing out loud over, and he thinks I never make jokes at all, which means he doesn't recognise my sense of humour. Oh well.)