This is a book about traders in financial markets: what they do, the kind of people they are, how they perceive the world they inhabit, how they make decisions and take risks. This is also a book about how traders are managed - the best and the worst examples - and about the institutions they inhabit: firms, markets, cultures. There is much, much more in this book than can be absorbed in a single reading. It is a pleasure to see true scholarship brought to a topic that is under-researched, yet of great interest. The authors manage to impose coherence on wide-ranging material drawn from financial economics, sociology, psychology, and behavioral science. It is likely to engage bhavioral researchers and finance professinals for years.