"I loved this book. It makes sense of key economic behaviors not well explained by other models, through a combination of theory, examples, and clever experiments. Clearly written, it will be easily understood not only by economists but also noneconomists. Vintage Frank."--Shlomo Maital, author of "Executive Economics" "Robert Frank takes us beyond the economic notion of rationality, pointing to the norms that guide people, their social status, and character, and make them seem nicer than economic theory would have them be. He adds an interesting twist to the story by showing that those who are subjected to theory may actually be less nice, less cooperative than others."--Arjo Klamer, editor of "Conversations with Economists" and "The Value of Culture"