JOHN TIERNEY on narcissism. “Now, after a computer analysis of three decades of hit songs, Dr. DeWall and other psychologists report finding what they were looking for: a statistically significant trend toward narcissism and hostility in popular music. As they hypothesized, the words ‘I’ and ‘me’ appear more frequently along with anger-related words, while there’s been a corresponding decline in ‘we’ and ‘us’ and the expression of positive emotions.” It’s not just music where that’s happening.