In 1998, one of us, Daniel Goleman, published in these pages his first article on emotional intelligence and leadership. The response to “What Makes a Leader?” was enthusiastic. People throughout and beyond the business community started talking about the vital role that empathy and self-knowledge play in effective leadership. The concept of emotional intelligence continues to occupy a prominent space in the leadership literature and in everyday coaching practices. But in the past five years, research in the emerging field of social neuroscience—the study of what happens in the brain while people interact—is beginning to reveal subtle new truths about what makes a good leader.

A version of this article appeared in the September 2008 issue of Harvard Business Review.