Does violence on a movie, TV, or computer screen or in a song lyric beget violence in the streets? What about aggression and violence in televised sporting events? What are the known effects of violence in the media on the developing mind of a young child? Do rating systems and warning labels help in the effort to keep overtly violent materials out of the hands of children--or do they act as magnets? Where does violence in the media cross a line from legitimate entertainment and plot development to gratuitousness and even pornography? How do we define media violence, and just how much is there? What methodologies do behavioral scientists use to assess content and draw conclusions about effects, and how do we separate valid inferences from entrenched myths and assumptions? How should findings from research studies be translated into public policy? Students are able to explore these questions and more in the Encyclopedia of Media Violence. Entries examine theory, research, and debates as they relate to media violence in a manner that is accessible and jargon-free to help readers better understand questions from varied perspectives. From "Aggression" and "Animated Cartoons" to "V-chips" and "War Toys," this work provides balanced, comprehensive coverage of this hot-button issue.