It all depends on the individual. I had autism as a kid in Kindergarten and ever since I was treated I was still different from others throughout my school years. Funny that you mentioned about maturity, my older sister (Possible Weeaboo) tends to not act her age when she doesn't like something or when she gets into "arguements" (When it's actually debating). I was told by others I'm far more marture than she is, although to be far she never went through four years of JROTC.