"One study reveals that young men who are habitually aggressive may be especially vulnerable to the aggression-enhancing effects of repeated exposure to violent games," said psychologists Craig A. Anderson, Ph.D., and Karen E. Dill, Ph.D. "The other study reveals that even a brief exposure to violent video games can temporarily increase aggressive behavior in all types of participants."
The first study involved 227 college students who completed a measure of trait aggressiveness and reported their actual aggressive behaviors (delinquency) in the recent past. They also reported their video game playing habits. "We found that students who reported playing more violent video games in junior and high school engaged in more aggressive behavior," said lead author Anderson, of Iowa State University. "We also found that amount of time spent playing video games in the past was associated with lower academic grades in college."
In the second study, 210 college students played either a violent (Wolfenstein 3D) or nonviolent video game (Myst). A short time later, the students who played the violent video game punished an opponent (received a noise blast with varying intensity) for a longer period of time than did students who had played the nonviolent video game.
"Violent video games provide a forum for learning and practicing aggressive solutions to conflict situations," said Dr. Anderson. "In the short run, playing a violent video game appears to affect aggression by priming aggressive thoughts. Longer-term effects are likely to be longer lasting as well, as the player learns and practices new aggression-related scripts that can become more and more accessible for use when real-life conflict situations arise."
"One major concern is the active nature of the learning environment of the video game," say the authors. "This medium is potentially more dangerous than exposure to violent television and movies, which are known to have substantial effects on aggression and violence."
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