I do field diagnostics for research projects and this is generally true and very right on.
However, I've been taken in twice by someone who is clearly on the Antisocial/Narcissist boundary. In one of the cases, I was not exactly taken in, but I did not think the person was clinically diagnosable. I noticed the lying on practically the first day I met her (she was and is no longer a high ranking college administrator). There are quite a few N/ASP people in administration, I've come to see. Very few among the teaching ranks, as various processes weed them out.
So, IOW, in my own personal life, I still get taken in.
They can be very charming, but one clue is that you might notice them talking cr#p about the very people they are charming to (or scheming outright to harm or defraud them). The ordinary, every day Narcissist/APD person has no trouble lying to their relationship partner, and is particularly prone to various types of affairs. If they require a constant audience of admirers, it's quite difficult for them if they can't get access to their group (whom they also use to manipulate, to provide alibis for their other actions, etc). Both of the people I'm speaking about have performed criminal actions, both have been given mere slaps on the wrist (asked to resign, details undisclosed to press, etc).
