Leonard Berkowitz is known throughout the world as a leading researcher in the field of psychology of aggression. For several generations of psychologists, his laboratory, field and theoretical research became a role model. Stanford, Oxford, Michigan, Cornell, and Cambridge universities are proud of Berkowitz's participation in their scientific activities. Finally, the main work of the leading specialist in the field of aggression became available to the Russian-speaking reader. This book summarizes the research of the famous scientist and today represents the most comprehensive source of classical knowledge and modern concepts about the nature and research of human aggression.