Historically, leadership research has minimized the role of personality. Yet, decades of failed executives and recent scientific study demonstrate not only that personality predicts leader performance, it also appears to be the strongest single domain of individual differences related to leadership.

Personality, Leader Behavior, and Overdoing It by Joyce Hogan and Robert Kaiser, tests the links between personality ratings of four leader behavior styles and examines the assumption that strengths can become weaknesses by determining the level of personality scores associated with ratings of the right amount versus too much of the leader behaviors.