Now that I know more, as the world does, I realize one parent and an earlier friend were both psychopathic. At that time, I thought a psychopath was a serial killer. LOL, but I've learned more now.

I have read quite a lot recently about the psychopathy of serial killers, e.g., Richard Ramirez. As a teacher, I have met many psychopaths in the making. I must get a copy of Hare's book. He has a checklist, I think.