I have a friend who always drinks his coffee black with no sugar (and is rather pretentious about it, mind you), and whenever the server asks him if he wants milk, he makes the same joke: “I’ll take it black, like my soul.” Now, a new study published in the journal Appetite suggests there may be something to that. Researchers at the University of Innsbruck in Austria asked more than 1,000 men and women to self-report their taste preferences and answer a questionnaire that assessed their Machiavellianism, psychopathy, narcissism, everyday sadism, trait aggression, and the Big Five factors of personality....
