From an article by Lakshmi Chaudry in the 29 January 2007 issue of The Nation:
In the 1950s, only 12 percent of teenagers between 12 and 14 agreed with the statement, "I am an important person." By the late 1980s, the number had reached an astounding 80 percent, an upward trajectory that shows no signs of reversing. Preliminary findings from a joint study conducted by Jean Twenge, Keith Campbell and three other researchers revealed that an average college student in 2006 scored higher than 65 percent of the students in 1987 on the standard Narcissism Personality Inventory test, which includes such statements as "I am a special person," "I find it easy to manipulate people," and "If I were on the Titantic, I would deserve to be on the first lifeboat."