手法を比較

	Cultivation Differential Analysis	Media System Dependency Analysis
分野	Communication	Communication
系統	Process / pipeline	Process / pipeline
提唱年	1976	1976
提唱者	George Gerbner & Larry Gross	Sandra Ball-Rokeach & Melvin DeFleur
種類	Survey-based comparison of heavy versus light television viewers	Survey approach to audience reliance on media to meet goals
原典	Gerbner, G., & Gross, L. (1976). Living with television: The violence profile. Journal of Communication, 26(2), 172–199.	Ball-Rokeach, S. J., & DeFleur, M. L. (1976). A dependency model of mass-media effects. Communication Research, 3(1), 3–21.
別名	Cultivation differential, Heavy-light viewer differential analysis, Mainstreaming and resonance analysis, Yetiştirme Farkı Analizi	Media dependency analysis, MSD analysis, Dependency theory measurement, Medya Bağımlılığı Analizi
関連	4	4
概要	Cultivation differential analysis is the analytic core of cultivation theory: it compares the social-reality beliefs of heavy television viewers with those of light viewers to estimate how much exposure to television's recurrent messages 'cultivates' a worldview. The cultivation differential is the percentage-point gap between heavy and light viewers in endorsing a television-consistent belief, examined net of demographic controls and refined by the concepts of mainstreaming and resonance.	Media system dependency analysis operationalizes Ball-Rokeach and DeFleur's 1976 theory that media effects are strongest when individuals depend heavily on the media system to attain personal goals — understanding their world, orienting their actions, and finding diversion. The method surveys the intensity of these dependency relations and relates them to cognitive, affective, and behavioral effects of media.