Book excerpt: This definitive examination of this important social topic asks questions such as: How much media violence is there? What are the meanings conveyed in the way violence is portrayed? What effect does it have on viewers?Divided into four parts, the book covers: a review of research on media violence; re-conceptions of exisiting theories of media violence; addresses the need to rethink the methodological tools used to assess media violence; and introduces the concept of Lineation Theory, a perspective for thinking about media violence and a new theoretical approach explaining it.