Rosanna Guadagno and colleagues asked over three hundred students about their blogging habits and asked them to complete the now industry-standard Big Five Personality Inventory.

Twenge and her colleagues examined the responses of 16,475 college students nationwide who completed an evaluation called the Narcissistic Personality Inventory test.

Twenge and her colleagues examined the responses of 16, 475 college students nationwide who completed an evaluation called the Narcissistic Personality Inventory test.