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Violent Video Games and Bad Behavior: The Evidence Mounts

• February 10, 2014 • 4:00 AM

Grand Theft Auto III. (Photo: Rockstar Games)

New research from Italy and a meta-study from Austria both connect playing violent video games with antisocial behavior.

Still convinced that violent video games are harmless fun? You might want to put down that console and consider the findings of two new research papers.

The first, a meta-analysis of 98 studies with nearly 37,000 participants, concludes without equivocation that “violent video games increase aggression.”

The second, which describes new research from Italy, provides further evidence of that troubling dynamic, and indicates they also lead to “decreased self-control and increased cheating.”

“Many real-world decisions require self-regulation of moral behavior,” writes a research team led by psychologist Alessandro Gabbiadini. “Our study indicates that playing violent video games can interfere with this ability.”

“Participants who played a violent video game for only 35 minutes exhibited less self-control, cheated more, and behaved more aggressively than did participants who played a nonviolent video game.”

The Italian study, published in the journal Social Psychological and Personality Science, featured 172 high school students. After 10 minutes of practice, each played a violent video game (Grand Theft Auto III or Grand Theft Auto San Andreas) or a non-violent one (Pinball 3D or Mini Golf 3D) for 35 minutes.

Participants were told they could snack from a bowl of M&Ms placed next to the computer as they played. However, they were also warned that eating too much candy too quickly was unhealthy. Their level of self-control was measured by noting how much of the chocolate they consumed.

After finishing play, they completed a survey designed to measure their level of moral disengagement. On a one-to-seven scale (“completely agree” to “completely disagree”), participants responded to a series of statements indicating a tendency to think of moral behavior in relative terms.

Examples include “Compared to the illegal things people do, taking some things from a store without paying for them is not very serious” and “It is OK to insult a classmate, because beating him/her is worse.”

The experiment concluded with two tests designed to measure aggression and the tendency to cheat.

Participants were told they could earn one raffle ticket for each problem they solved on a 10-item logic test. They scored their own responses and took a lottery ticket from an envelope for each correct answer. Researchers measured cheating by comparing the number of tickets taken with the actual number of correct answers.

In addition, participants took part in a “competitive reaction time task” in which the winner of each round “could blast the loser with loud noise through headphones.” Researchers measured aggression by how loud and long participants blasted the unpleasant sound.

The results were consistent across the board: “Participants who played a violent video game for only 35 minutes exhibited less self-control, cheated more, and behaved more aggressively than did participants who played a nonviolent video game.”

Specifically, those who played the violent game ate more M&Ms, took more unearned raffle tickets, and gave their rivals a longer and louder blast of noise.

“Although very few teenagers were unaffected by violent video games,” Gabbiadini and his colleagues write, “individuals high in moral disengagement were far more affected than those low in moral disengagement.” This suggests a subset of players—those prone to find ways to justify their unethical behavior—are particularly susceptible to the effects of these games.

Given this new evidence, “it seems more appropriate to assess the consequences of violent video games on behavior in terms of a gradient of intensity of the effects, rather than just the presence/absence of such consequences,” they conclude.

That last point provides interesting context for the meta-study, which was conducted by researchers Tobias Greitemeyer and Dirk Mügge and published in the Personality and Social Psychology Bulletin. It finds “strong evidence that violent video games do affect aggressive outcomes.”

Aggressive behavior is multi-determined, with violent video game exposure being one source among many others (and some of them having a stronger influence than do violent video games).

On the other hand, even small effects—and the effect of violent video games is small to medium in its effect size—can have a negative impact on a societal level when many people are exposed to it, which certainly applies to violent video games.

Thus, in our view, violent video game play should be regarded as a risk factor for aggressive behavior.

The Italian researchers both expand on that notion—they find it’s actually a risk factor for several types of negative behavior—and narrow it somewhat, suggesting certain players are more susceptible to such effects than others. These findings, which need to be replicated, potentially add important nuance to the debate.

But they don’t change the fundamental equation: Violent video games can, and do, impact players’ attitudes and behaviors. And not for the better.

Tom Jacobs
Staff writer Tom Jacobs is a veteran journalist with more than 20 years experience at daily newspapers. He has served as a staff writer for The Los Angeles Daily News and the Santa Barbara News-Press. His work has also appeared in The Los Angeles Times, Chicago Tribune, and Ventura County Star.

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