This is a question I’ve pondered considerably. My provisional answer is yes they do. However I think they think everyone else is lying also. For them this includes surgeons, pilots, tattoo artists and other highly trained specialists. But this would mean that there is no hard reality to them, reality isn’t really real — it’s plastic and responsive to emotional wish. From the research (A. Raine’s comes to mind) it seems their brains are radically different.
They are one of the few psychopathic subsets that I consider mentally ill and deserving of confinement in mental hospitals — not to cure them, which can’t be done, but to protect society.