Every autumn, millions of Americans flock to haunted houses, happily willing to pay $20 or $30 to get petrified out of their wits. Scaring people is no amateur game: haunted houses make up a $300 ...

Fear is a natural and normal human experience. We all feel it from time to time, and there are situations when we rely on fear to keep us out of trouble. “Fear is healthy and adaptive,” says ...