The nearly 140 participants in the two studies published by Arbuckle and Cunningham completed a gambling-like task in which they were to decide whether to take or pass on pairs of gambles, with one gamble for themselves and one for other p…

The quintessential psychopath shows callous disregard for others, a complete lack of empathy, a glibness and superficial charm, and an impulsive and antisocial lifestyle. We would never, given this set of qualities, expect such individuals…