It may sound trite, but the Olympic Games truly are a chance to witness what unites us all as human beings: Our joy in triumph and our anguish in defeat.
David Matsumoto believes this truism, but on an entirely different level.
Matsumoto is a professor of psychology at San Francisco State University and a former Olympic judo coach. He has analyzed the behavior of Olympic athletes. He spoke recently with Shankar Vedantam about what his research reveals.