alt Hacker NewsI don't think there's much underlying relationship. True they will both impact social relationships. But it's more like how being blind or being deaf will impact social relationships. The mechanics might be the same but the cause is very different.
IMHO schizophrenia is a breakdown in the barrier between imagination and processing of reality.
Autism and the like is an inability to process social cues like a blind person might have a damaged visual cortex.
Autism is not the inability to process social cues. It seems more likely to be the difficulty to either filter or generalize sensory input.