A reader wrote (edited for length):
I noticed your interest in the origins of sociopathy. One sadly deceased researcher published a long paper called "Sociobiology of sociopathy" that was an attempt(probably one of the earliest) to put it in an evolutionary perspective. I'm not an expert in that sort of thing, but the case looked tight enough to me. To her, it looked like sociopathy is a biological adaptation to a cheating strategy at life. True sociopaths have a certain set of genes, and are from problem families. People of low intelligence with same backgrounds may appear to have some of these traits, but in them it's just the environment and so on.I started reading the article. It's very good but long. I'm not surprised that vampires have once again been connected to sociopaths. I myself am hoping that this blog will ride the new vampire popularity and get picked up for a miniseries. Not true.
Another thing you may not have come across is Blindsight(novel, not syndrome). I don't know whether you like speculative fiction, but this one is very dark, very bleak, and very anti-neurotypical (compares ordinary humans to the equivalent of Oz marsupials..). It's mostly about mind, consciousness, utility of consciousness and how at some point in the future, homo sapiens will become somewhat obsolescent.
It was written by Peter Watts. One of the chief characters of Blindsight is a vampire (not the fantasy variety, sort of believable - an extinct sub-species of exclusively man-eating completely sociopathic* humans, brought to life again through modern science). The others are less weird, though. In other books, he loves having various non-standard characters, from serial killers, sexual sadists, wife-abusers, pedophiles.. ptsd sufferers, etc.. )
*obviously, if wolves empathized with sheep.. they'd go hungry.