I have heard of this before, my wife has a copy of the book "Parenting your Asperger child". It seems more lightweight It weighs 350 g (paperback edition) than Tony Attwood's complete guide to AS (700 g in paperback).
I think that if you looked at the AS community you could devise all manner of ways to divide up and classify us. But then we would have to ask the question of how valid or useful it is. If I was to take 1000 WPers and ask then a set of questions then I could put them on a scale depending on how interested they are in star trek. I could also work out where each one was on another scale such as how tall they are.
I would end up with four groups
1 Tall aspies with no interest in star trek
2 Tall aspies with an interest in star trek
3 Short aspies with no interest in star trek
4 Short aspies with an interest in star trek
The great question then is does any difference exist between the four groups in terms of their needs, wants etc. I could create the hypothesis that those aspies in group 2 can not get a life partner and do not ejoy life while those in group 3 have partners and enjoy life. But until I test the hypothesis it is just a guess.
I very much doubt if there would be in important difference.
The book might be right or it might be wrong, it does not clearly indicate where the author got the idea from. The idea appears to be an untested hypothesis, I hold the view that an untested hypothesis might be interesting but it is of limited if any use. I think that the authors of the book or some other interested party should do some good quaility research which will either confirm or refute the hypothesis that these groups exist.
The book has very few references which makes it hard to follow back where the authors obtained their ideas from.
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Diagnosed under the DSM5 rules with autism spectrum disorder, under DSM4 psychologist said would have been AS (299.80) but I suspect that I am somewhere between 299.80 and 299.00 (Autism) under DSM4.