Schadenfreude seems to arise out of envy and a sense of justice. But some psychologists believe a darker impulse is at play.
The BBC’s Sherlock – along with most contemporary adaptations – seems to indicate that the values of the intellect are not those of society.
Despite the popular perception, most psychopaths aren't coldblooded or psychotic killers. Many live successfully among us, using their personality traits to get what they want.
Psychopaths and sociopaths have similar characteristics, lacking remorse or empathy for others. And they can both be violent, deceitful and manipulative. But what are the differences between the two?