- David Gergen: Donald Trump's behavior fits the description of a narcissistic leader
- He cites research that narcissists can be effective leaders unless they fall into trap of lacking self-restraint
David Gergen is a senior political analyst for CNN and has been a White House adviser to four presidents. A graduate of Harvard Law School, he is a professor of public service and co-director of the Center for Public Leadership at The Harvard Kennedy School. Follow him on Twitter: @david_gergen. The opinions expressed in this commentary are his.
(CNN)Donald Trump's behavior on stage Thursday night and in the days that have followed strike many as unfathomable: How can anyone act so arrogantly and meanly in public life? But in fact, there is a large body of academic and other work that helps to explain. Just Google the literature on "narcissistic leadership" and you will instantly recognize Trump -- both his bright and dark sides.