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monitoring of teens’ media use, gaming, apps, libraries, technology and friendships, and
mobile messaging.) The organization explores the impact of the Internet on families,
communities, work and home, daily life, education, health care, and civic and political life.
One report from a few years back found that most artists and musicians have embraced the
Internet as a place to sell their creative works, and that two-thirds consider file-sharing to be
a minor threat or no threat at all. Pew relies on phone surveys as well as online surveys to
gather data. The nonprofit organization makes all data available online at
http://www.pewinternet.org.
• A famous study published in 1992 in the prestigious Journal of the American Medical
Association found a correlation between the number of murders in the United States and
Canada between 1945 and 1974 (beginning with the introduction of television) and the
number of murders in white South Africa, which introduced television after 1975. The study
concluded that homicides doubled in both cases after the introduction of television, and it
held television responsible for higher murder rates. The study has been roundly rebuffed as
ludicrous by a number of researchers, but it continues to be cited as if the conclusions were
valid. Centerwall’s conflation of correlation with causation provides an excellent case for
understanding the key distinction between correlation and causation. (Brandon S. Centerwall,
• Describe the five mass media theories posited by researchers: social learning theory, agenda–
setting, the cultivation effect, the spiral of silence, and the third–person effect.
• Shortly after the Columbine High School massacre, Rolling Stone editor Jann Wenner
blamed lax gun laws, not media, for violence in American culture, writing: