Perhaps not a direct causation but there is a link.
I mean, how does a parent typically instill and develop a conscience in their child? By asking the child "How would you feel if....".
A child hits another child: "How would you feel if Johnny hit you?"
A child breaks or takes a toy: "What if I break your toy? Here let me break it. Do you feel good?"
It's by relating something/someone to one's self that others are understood.
If the reference point (yourself) is 'off', the understanding of the other/situation will likely be off.
How many times has jomp said that he struggles in normal social interactions because he doesn't relate to the more complex emotions that normal people have? He doesn't get them. His wife has to run interference between him and some of their friends, or she has to explain the whys of social interactions to him later.
I just had something like this happen between myself and someone with a PD, and his thinking was "If that happened to me, I wouldn't care. I'd think it's funny. So why are you reacting differently to what I did?" My reaction makes no sense to him because it is not how he'd react.