Psychopathic personality is associated with many kinds of anti-social and dangerous behaviors, including violence, exploitation, dishonesty, recklessness, laziness, sexual promiscuity, and even the absence of human empathy and genuine love. Race differences in the prevalence of psychopathy is thus extremely consequential for the future of multiracial societies. In this book, eminent personality researcher Richard Lynn marshals an enormous body of evidence to demonstrate clear and consistent race differences in psychopathic personality, as well as to explore why these differences evolved across time. In an age of mass migration and increasing interaction between different races, few books could be more timely and important. * * *It takes courage to write books on race and intelligence in the present political climate. It takes even more courage to explore the origin, existence, and consequences of race differences in psychopathic personality. Richard Lynn has dared to do both. The relevance of this book cannot be overestimated in a time in which globalization increasingly forces different races to live and work together. May politicians responsible for migration programs--and everyone interested in peaceful coexistence--read Lynn's books closely before making decisions that affect all our lives. Helmuth Nyborg Professor Emeritus University of Aarhus, Denmark