Socially aggressive narcissism

Researchers have established a direct link between the number of friends you have on Facebook and the degree to which you are a "socially disruptive" narcissist, confirming the conclusions of many social media sceptics. People who score highly on the Narcissistic Personality Inventory questionnaire had more friends on Facebook, tagged themselves more often and updated their newsfeeds more regularly. The latest study, published in the journal Personality and Individual Differences, also found that narcissists responded more aggressively to derogatory comments made about them on the social networking site's public walls and changed their profile pictures more often. A number of previous studies have linked narcissism with Facebook use, but this is some of the first evidence of a direct relationship between Facebook friends and the most "toxic" elements of narcissistic personality disorder. Read more here