George Gerbner was a media researcher who studied the effects of television violence for over 30 years. He founded the Cultural Indicators Project in 1968 to analyze television content and its effects on viewers' perceptions of the world. Gerbner developed cultivation theory, which proposes that heavy television viewers come to see the real world as similar to the fictional world portrayed on TV. The Cultural Indicators Project monitored television programming to measure the amount of violence and how it impacted viewers' beliefs about society.