General Discussion
In reply to the discussion: Why Can't We See That Boston Is More Like Newtown Than 9/11? [View all]marions ghost
(19,841 posts)is --not every narcissist is a sociopath, but every sociopath is a narcissist. Definite overlap. There is a fine line between the narcissist lack of empathy and self-focus, and the sociopathic complete lack of conscience and cruelty. It's in the same ballpark. They can do brain scans now that indicate sociopathic tendencies in the context of a psychological evaluation using other criteria.
Sociopaths & pathological narcissists can both appear to be functional in society and fool a lot of people. That's what is scary. Like in this case, the FBI can argue that they really didn't have cause to detain the guy. It can be very hard to predict who is going to snap and do something like this bombing. Older brother might have been predicted, but not with younger brother. And yet younger bro is just as sociopathic.