Whether or not exposure to media violence causes increased levels of aggression and violence in young people is the perennial question of media effects research. Some experts, like University of Michigan professor L. Rowell Huesmann, argue that fifty years of evidence show "that exposure to media violence causes children to behave more aggressively and affects them as adults years later." Others, like Jonathan Freedman of the University of Toronto, maintain that "the scientific evidence simply does not show that watching violence either produces violence in people, or desensitizes them to it."
Media violence is notoriously hard to define and measure. Some experts who track violence in television programming, such as George Gerbner of Temple University, define violence as the act (or threat) of injuring or killing someone, independent of the method used or the surrounding context. Accordingly, Gerber includes cartoon violence in his data-set. But others, such as University of Laval professors Guy Paquette and Jacques de Guise, specifically exclude cartoon violence from their research because of its comical and unrealistic presentation.
Second, researchers disagree over the type of relationship the data supports. Some argue that exposure to media violence causes aggression. Others say that the two are associated, but that there is no causal connection. (That both, for instance, may be caused by some third factor.) And others say the data supports the conclusion that there is no relationship between the two at all.
Third, even those who agree that there is a connection between media violence and aggression disagree about how the one effects the other. Some say that the mechanism is a psychological one, rooted in the ways we learn. For example, Huesmann argues that children develop "cognitive scripts" that guide their own behaviour by imitating the actions of media heroes. As they watch violent shows, children learn to internalize scripts that use violence as an appropriate method of problem-solving.
Other researchers argue that it is the physiological effects of media violence that cause aggressive behaviour. Exposure to violent imagery is linked to increased heart rate, faster respiration and higher blood pressure. Some think that this simulated "fight-or-flight" response predisposes people to act aggressively in the real world.
Still others focus on the ways in which media violence primes or cues pre-existing aggressive thoughts and feelings. They argue that an individual’s desire to strike out is justified by media images in which both the hero and the villain use violence to seek revenge, often without consequences.
In her final report to the CRTC, Martinez concluded that most studies support "a positive, though weak, relation between exposure to television violence and aggressive behaviour." Although that relationship cannot be "confirmed systematically," she agrees with Dutch researcher Tom Van der Voot who argues that it would be illogical to conclude that "a phenomenon does not exist simply because it is found at times not to occur, or only to occur under certain circumstances."
Many social scientists have concluded that there is a weak correlation between watching media violence and real life aggression—enough to convince organizations like the Canadian Pediatric Society and the American Medical Association that media violence is a public health issue. After all, governments don't wait for scientific certainty before they act to protect the public from smoking or drinking; all that's required is proof of a risk. If there is evidence that an activity or substance will increase the probability of negative effects, then the state is justified in intervening.
The repercussions aren't limited to a potential increase in aggressive behaviour. Many commentators worry that media violence has become embedded in the cultural environment; that, in some sense, it's part of the "psychic air" that children and young people constantly breathe. That environment of violence, profanity, crudeness, and meanness may erode civility in society by demeaning and displacing positive social values.
Todd Gitlin goes further. He argues that media violence is a red herring that allows politicians to divert attention away from very real social problems. He writes, "There is little political will for a war on poverty, guns, or family breakdown ... we are offered instead a crusade against media violence. This is largely a feel-good exercise, a moral panic substituting for practicality... It appeals to an American propensity that sociologist Philip Slater called the Toilet Assumption: once the appearance of a social problem is swept out of sight, so is the problem. And the crusade costs nothing."
Rather than focusing on violent content, Gitlin argues we should be condemning "trash on the grounds that it is stupid, wasteful, morally bankrupt: that it coarsens taste, that it shrivels the capacity to feel and know the whole of human experience."
The frequent and graphic violence in [the] critically acclaimed film [Saving Private Ryan] is a reminder that the portrayal of violent behavior can serve artistic and moral purposes. The frequent and graphic violence in [the] critically acclaimed film [Saving Private Ryan] is a reminder that the portrayal of violent behavior can serve artistic and moral purposes. The frequent and graphic violence in [the] critically acclaimed film [Saving Private Ryan] is a reminder that the portrayal of violent behavior can serve artistic and moral purposes. The frequent and graphic violence in [the] critically acclaimed film [Saving Private Ryan] is a reminder that the portrayal of violent behavior can serve artistic and moral purposes.
We've found that every aspect of even the trashiest pop-culture story can have its own developmental function... Identification with a rebellious, even destructive, hero helps children learn to push back against a modern culture that cultivates fear and teaches dependency.