Derived from a meeting of natural and social scientists, this interdisciplinary book aims to summarize the main issues regarding the problem of human aggression, as well as human beliefs about the subject. This study brings together internationally known authorities and presents their recent contributions which range in complexity from the physiological to individual aggression, group conflict and international war. The study concludes with a multi-level approach to the problems of aggression and war. In nontechnical language suitable for general science readers, the book provides a valuable framework for the development of ideas and new attitudes in a field rife with misconceptions.