Psychopathy is a condition characterized by the absence of empathy and the blunting of other affective states. Callousness, detachment, and a lack of empathy enable psychopaths to be highly manipulative. Nevertheless, psychopathy is among the most difficult disorders to spot.

Psychopaths can appear normal, even charming. Underneath, they lack any semblance of conscience. Their antisocial nature inclines them often (but by no means always) to criminality.

Psychopaths spark popular fascination and clinical anguish: Adult psychopathy is largely resistant to treatment, though programs exist to treat callous, unemotional youth in hopes of preventing them from maturing into psychopaths.

Brain anatomy, genetics, and a person’s environment may all contribute to the development of psychopathic traits