A player can make you believe he is looking for a meaningful relationship and some will make you believe they care about you.

He does not make it to dinner with your parents after you told him how important it is to you. To help you figure out if you, or perhaps your boss, are a narcissist, we combed through the psychology literature looking for patterns of narcissistic behavior. D., a psychologist and the author of "The Narcissist You Know." Here are common signs of narcissism.This is an update of an article originally written by Vivian Giang, with additional contributions by Drake Baer.You're more likely to find a narcissist in the C-suite than on the street, research suggests.That's because the traits that make narcissists so difficult to hang out with or date — including a constant need for validation, a willingness to control people, and a ruthlessness in getting their needs met — happen to make them super effective at rising up the ranks.