This book is part of the Cambridge University Press book series, Progressive Psychology, edited by Fathali M. Moghaddam. As the science of human behavior, psychology is uniquely positioned and equipped to try to help us make more progress toward peaceful, fair, and constructive human relationships. However, the enormous resources of psychology have not been adequately or effectively harnessed for this task. The goal of this book series is to engage psychological science in the service of achieving more democratic societies, toward providing equal opportunities for all. The volumes in the series contribute in new and unique ways to highlight how psychological science can contribute to making justice a more central theme in health care, education, the legal system, and business, combatting the psychological consequences of poverty, ending discrimination and prejudice, better understanding the failure of revolutions and limits on political plasticity, and moving societies to more openness. Of course, these topics have been discussed before in scattered and ad hoc ways by psychologists, but now they are addressed as part of a systematic and cohesive series on Progressive Psychology.