Do Neurotypicals and Psychopaths have the same average life expectancies?
I actually don't know, and to be fair, I don't think this is answerable with the current research available. They only psychopaths that they could draw on for research would be in prison.
That in and of itself negates any possibility that the results would be comparable. A psychopath in prison is likely to have many other threats to their lives that a neurotypical in the outside world has no chance of encountering. I don't think a neurotypical is going to be caught up in an impromptu prison riot for instance, or randomly shanked in their dining room.
Not really the case in prison. There have been no studies on civilian psychopaths. There have been a lot of pseudo studies, but none that even come close to looking at lifespan comparisons. Without there being data to compare, there is no answer to this question. It's a good one, it's just not answerable.