Take a look around your workplace. How do your coworkers--or your boss--take their coffee? If they're drinking it black, there could be a problem.
According to a new study, people who enjoy bitter flavors -- like black coffee -- are more likely to be psychopaths.
Researchers surveyed more than 1,000 adults and found that people who most enjoy bitter flavors are the most messed up, exhibiting psychopathic traits, as well as other antisocial personality traits like sadism and narcissism.