Grade inflation promotes ego inflation, the opposite of healthy self-confidence. "We want to encourage effort, especially among young kids," says Jean M. Twenge, author of The Narcissism Epidemic: Living in the Age of Entitlement. "But the 'everybody gets a trophy' mentality basically says that you're going to get rewarded just for showing up. That won't build true self-esteem; instead, it builds this empty sense of 'I'm just fantastic, not because I did anything but just because I'm here.'"