A New York Times article in 2002 cited a number of scientific studies of schadenfreude, which it defined as “delighting in others’ misfortune.” Many such studies are based on social comparison theory, the idea that when people around us have bad luck, we look better to ourselves. Other researchers have found that people with low self-esteem are more likely to feel schadenfreude than are people who have high self-esteem.[21]

A 2006 experiment suggests that men, but not women, enjoy seeing bad people suffer. The study was designed to measure empathy, by watching which brain centers are stimulated when subjects inside an fMRI observe someone having a painful experience. Researchers expected that the brain’s empathy center would show more stimulation when those seen as good got an electric shock than they would if the shock was given to someone the subject had reason to consider bad. This was indeed the case, but for male subjects the brain’s pleasure centers also lit up when someone else got a shock that the male thought was well-deserved.[22]

Brain-scanning studies show that schadenfreude is correlated with envy. Strong feelings of envy activated physical pain nodes in the brain’s dorsal anterior cingulate cortex; the brain’s reward centers (e.g. the ventral striatum) were activated by news that the people envied had suffered misfortune. The magnitude of the brain’s schadenfreude response could even be predicted from the strength of the previous envy response. [23][24]