A socially devastating disorder defined by a constellation of affective, interpersonal, and behavioural characteristics, including egocentricity; impulsivity; irresponsibility; shallow emotions; lack of empathy, guilt or remorse; pathological lying; manipulativeness; and the persistent violation of social norms and expectations.
Hare, R.D. (1998). Psychopaths and their nature: Implications for the mental health and criminal justice systems. In Millon, T., Simonsen, E., Biket-Smith, M. & Davis, R.D. (Eds.). Psychopathy: Antisocial, criminal and violent behaviour. New York: Guildford. pp. 188-212.