Men are more likely than women to be pleased when bad guys get their comeuppance, according to a University College London study. Scientists took MRI scans of subjects participating in a simple Prisoner's Dilemma game, in which players can either cooperate with or double-cross each other. The scans revealed that when known traitors were punished with an electric shock, primitive reward areas in men's brains lit up.
Source: June 2006 Popular Science Magazine
Source: June 2006 Popular Science Magazine