Lately I've been studying Psychopathy. When I was in school for Psychology 35 yrs ago Psychopathy was considered a psychological illness. While it does have a psychological aspect to it I was intrigued to discover we now are learning to detect it with the MRI and that a psychopath's brain is different from non psychopathic brain. There is a guy I've know half my life that I'm sure is psychopathic. He's a functional psychopath and his illness has almost improved his life when he was young. But he's now in a position where he needs to be caregiver to his life long GF. This is causing him great troubles as I knew it would. He's constantly losing his temper and taking his anger out on her. He asked me for help because he knows I almost became a PhD psychologist. As is typical of psychopathy this guy lies constantly. I know I can't help him but I'm wondering if anyone can? I tried to tell him step 1 is to admit to himself that he's a chronic liar and he can't even do that. It just triggers his rage.

So what I'm asking is if psychopath's ever change, with or without therapy?