According to the Times’ John Tierney, some researchers are concluding that narcissism — which they apparently define as self-centeredness and a tendency to self-promote — is on the rise: Two of Dr. DeWall’s co-authors, W. Keith Campbell and Jean M. Twenge, published a book in 2009 titled “The Narcissism Epidemic,” which argued that narcissism is increasingly prevalent among young people — and possibly middle-aged people, too, although it’s hard for anyone to know because most of the available data comes... Read more