For example, in a study of tens of thousands of U.S. college students, Jean Twenge and her colleagues found that between the mid-1980s and 2006, narcissism increased a full 30 percent, as measured by statements like “If I ruled the world it would be a better place” and “I always know what I’m doing.”
But is this a level of narcissism normal for someone of college-age, that they can be expected to mature out of? College kids are the most chronically overstudied and oversampled population size simply because they are readily available, not a protected population, and generally more willing to be studied for less reward
