In the hours since the tragic shooting in Aurora, Colo., details about the life of the suspected gunman, 24-year-old James Holmes, and his motives remain obscure.
But a cloud of theories about violence, each accompanied by its own roster of statistics and experts, arises each time an event like this occurs, in an attempt to explain or at least contextualize the shocking episode.
Indeed, a firestorm of press coverage has reignited a decades-old debate about the influence of violent media on those who consume it. Was Holmes, who according to some reports strode into the theater dressed as Batman's nemesis the Joker, affected by violent games or movies like those of the franchise he invaded? Or was his choice of venue calculated to attract the greatest number of victims?
Insufficient evidence is available to draw conclusions yet, if it ever will be, about the twisted logic behind the tragedy in Colorado. But each time a trauma like this occurs, the statistics rolled out offer a conflicted picture of American society: violence in the media we consume continues to increase, and many researchers insist it leads to increased aggression and desensitization in youth. Others are convinced violent media has no effect.
Meanwhile, real-life violence has dropped precipitously over the last 30 years, and mass murders like the Aurora shooting make up a tiny fraction of violent crimes. But these traumas reopen conversation about violent media as Americans on both sides of the debate struggle to explain a senseless act.
Violent media's influence
Researchers began to study the possible effects of violence in the media in the 1950s, with the introduction of the television. Since then the number of studies on the issue has exploded — the Center on Media and Child Health website, operated by Children's Hospital Boston, lists 368 different studies on television and movies and their relationship to bullying and violence in children. The site also provides 125 studies about the effects of video and computer games on bullying and violence in youth.
The articles focus on different age groups and genders. They also offer different results. A longitudinal study from last year evaluating 700 elementary school age children found that those who witnessed violence, including television violence, were more likely to consider it "normal." Researchers concluded that this desensitization could mean these children were more likely to use aggression with others.
Another article, published in 2009, evaluated 800 teenagers on their preferences in video games, television and movies. Researchers found that those who preferred violence in the media they consumed were more likely to behave aggressively, suggesting, according to the abstract, "use of violent media may increase the risk of violent behaviors among teenagers."
Because of the long history of this branch of study, some researchers have reviewed the literature in order to examine all the evidence. John Murray of Kansas State University published a review in 2008 titled, "Media violence: The effects are both real and strong."
In his abstract, Murray asserts that "50 years of research on the effect of TV violence on children leads to the inescapable conclusion that viewing media violence is related to increases in aggressive attitudes, values and behaviors."
Similar views have been published by a number of institutions, including the American Psychological Association, the American Academy of Pediatrics and the American Academy of Family Physicians. They conclude that exposure to violent media can result in desensitization, increased aggression and an exaggerated view of the amount of violence in the everyday world.
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