Jeffrey Kluger

Senior Writer, TIME Magazine

Jeffrey Kluger is a senior writer at TIME Magazine and author of nine books on various topics, such as The Narcissist Next Door; Splendid Solution: Jonas Salk and the Conquest of Polio; The Sibling Effect; and Lost Moon: The Perilous Voyage of Apollo 13.

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The Best and Worst Narcissists in World History

Jeffrey Kluger describes some of the key traits of narcissistic personality disorder, pointing out that some of our greatest leaders have narcissistic tendencies.

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