Evolution has trained your mind to create in-groups and out-groups in a flash—but the lines are more flexible than you think.
Hitler appeared to have been highly sensitive to disgust, and research shows this trait is linked to numerous dimensions of ideology.
How easily grossed out are you? Your sensitivity to disgust reveals more about you than you'd probably be comfortable with, from how you'll vote in this election to your potential to be a cold-blooded killer.
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