Joshua D. Greene is Professor of Psychology and a member of the Center for Brain Science faculty at Harvard University. His research interests cluster around the intersection of psychology, neuroscience, and philosophy. His early work focused on the cognitive neuroscience of moral judgment and the interplay between emotion and reason in moral dilemmas. More recent work focuses on critical features of individual and collective intelligence. His current neuroscientific research examines how the brain combines concepts to form thoughts and how thoughts are manipulated in reasoning and imagination. His current behavioral research examines strategies for improved social decision-making and the alleviation of intergroup conflict. Other interests include effective altruism and the social implications of advancing artificial intelligence. He is the author of Moral Tribes: Emotion, Reason, and the Gap Between Us and Them.