More Ganondox theorizing time. If you are offend by Ganondox theorizing please leave this thread immediately.
If autistic people are supposed to find nonverbal communication difficult, than why is it that severely autistic people find nonverbal communication easier (example, nonverbal Autists who are fluent in sign language) than verbal communication. If the two conditions are the same only one is more severe, then this simply does not make sense. However, I think I've found the explanation. Saying that aspies have difficulty understand nonverbal information is a misnomer. Yes, the information that isn't processed is nonverbal, but it's not because it's nonverbal that it isn't bring processed. If teach an aspie that flipping someone off means "f**k you", then they will know that flipping someone off means "f**k you". Rather the reason it isn't being processed is because NTs have the instinctive ability to subconsciously pick up these signals, while autistic people for what ever reason do not, or at least don't pick them up as well. Autistic people can learn to manually read people, and some people here on the forum have claimed to master this skill to a extraordinary level, but manually reading someone is a lot harder than automatically reading someone. The lack of instinctly picking up human body language may actually make it easier for autistic people to learn the body language of animals. Now, the initial difficulty in reading people leads to later problems with nonverbal communication. As the aspies may only know of the bare semantics after they learn language, it may damage their understanding of pragmatics. As they don't release subconscious nonverbal communication exists, it may interfer with them picking up conscious verbal communication, and it may also throw off their own signals that they are supposed to be sending. I believe that the root of any form of autism is the lack or weakening of social instinct, which then results in a change in psychology which resides the brain into a more autistic brain due to neuroplasticity and an autistic psychology develops. As for what causes the initial gap in instinctual communication it could be a number of things that could vary from person to person, but I'm pretty sure sensory issues and gestalt perception probably often play a role in it, which is determined by neurology.