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Gin and tonic drinkers are more likely to be psychopaths, study says

People who enjoy bitter flavors like black coffee, dark chocolate and tonic water are more likely to possess traits like "Machiavellianism, psychoticism, and narcissism," according to an Austrian study.

Researchers at Innsbruck University carried out two tests on 953 subjects. Men and women were shown different foods that were sour, salty and bitter. They were then asked to grade each item on a scale.

The participants also answered personality questionnaires that gauged their emotional stability.

"Supertasting, that is, having a high sensitivity to bitter compounds, has been consistently linked to increased emotionality in humans and rats," the study said. "Bitter taste experiences were shown to elicit harsher moral judgments and interpersonal hostility."

Scientists found that people who enjoyed bitter foods and drinks tended show more negative personality traits like narcissism.