According to the National Institutes of Health:
6 percent of the general population has narcissistic personality disorder (NPD).
5 percent of the general population has borderline personality disorder (BPD).
2 percent of the general population has histrionic personality disorder (HPD).
And according to Dr. Martha Stout:
4 percent of the general population has antisocial personality disorder (ASPD, sociopathy, or psychopathy).
These are the Cluster B personality disorders, and based on the statistics above, they are found in more than one in every seven people—over 15 percent of the population (I’m rounding down, to account for comorbidity). Now consider that most of these people are highly functional, nonincarcerated, active members of society. So given the raw numbers, it’s highly likely that you unknowingly pass by one of these cunning manipulators every day on your way to work—perhaps even today, when they served you your morning coffee. So what’s the problem? The problem is that the general public knows virtually nothing about these incredibly pervasive disorders. If you were to ask your friends what borderline personality disorder is, how many of them would have an answer? And how many of them would have an accurate answer? Likewise, is someone with narcissistic personality disorder really just a person who looks in the mirror too much? And is someone with histrionic personality disorder really just a person who seeks out lots of attention? You’d probably find that most people have heard of psychopathy, but how about psychopathy outside of serial killers and Criminal Minds? What about the far more common everyday social predator who charms and manipulates someone’s life? What about the chameleon who destroys an unsuspecting victim from the inside out, all the while appearing completely innocent? The Cluster B disorders are disorders of emotion, conscience, empathy, and feeling—arguably some of the most important human qualities. So why are we not taught about these disorders in school? How have
MacKenzie, Jackson. Psychopath Free (Expanded Edition) (p. 252). Penguin Publishing Group. Kindle Edition.