The third edition of this successful textbook is a comprehensive, rigorous survey of the major topics in the field of behavioral economics. Building on the strengths of the second edition, it offers an up-to-date and critical examination of the latest literature, research, developments and debates in the field. Offering an inter-disciplinary approach, the authors incorporate psychology, evolutionary biology and neuroscience into the discussions. And, ultimately, they consider what it means to be 'rational’, why we so often indulge in 'irrational’ and self-harming behavior, and also why 'irrational’ behavior can sometimes serve us well. A perfect book for Economics students taking a module in Behavioural Economics at higher undergraduate level, or for students with an economics background taking a behavioural economics module at Master’s level.