A reader writes:
Definitely worth watching all of the interviews/documentaries (and HBO has made a few over the years) with famed mafia hitman Richard Kuklinski, especially the one with the psychiatrist.
What is especially relevant to your blog would be the the end of the interview, where the psychiatrist does a pretty good job explaining in succinct terms the genetic and environmental causes of ASPD and how both factors work together, in a way that makes a lot of sense without having to bring a lot of biological jargon into it, and without having to resort to chicken/egg arguments.
Kuklinski's anxiety and contained anger while listening to him is palpable.
The very end is quite powerful.