emotions

How does the human brain give rise to intelligence and conscious experience? Was Freud right that we are all plagued by forbidden sexual desires? What is the function of emotions such as disgust, gratitude, and shame? Renowned psychologist Paul Bloom answers these questions and many more in "Psych," his new book about the science of the mind.

David DeSteno is a professor of psychology at Northeastern University, where he directs the Social Emotions Group. He is a fellow of the Association for…