The three-year project to monitor television violence is based on an agreement between Senator Paul Simon and the four broadcast networks, ABC, CBS, Fox and NBC. The UCLA Center for Communication Policy was asked to monitor all television with a particular emphasis on broadcast network television. The UCLA study examines every series, television movie, theatrical film shown on television, children's program, special and advertisement aired during a television season. Over 3,000 hours of television are monitored every year. In a major difference from many previous studies, the UCLA report examines the context in which violence occurs thus distinguishing between violence which in its context raises concerns and that which does not.