Jonathan R Goodman, University of Cambridge
When you start to notice them, psychopaths seem to be everywhere. This is especially true of people in powerful places. By one estimate, as many as 20% of business leaders have “clinically relevant levels” of psychopathic tendencies – despite the fact as little as 1% of the general population are considered psychopaths. Psychopaths are characterised by shallow emotions, a lack of empathy, immorality, anti-social behaviour and, importantly, deceptiveness.