"What seems to matter is whether the players are practicing intentional harm to another character in the game. That's what increases immediate aggression -- more than how graphic or gory the game is."and
The researchers were surprised that the relation to violent video games was so strong.
"We were surprised to find that exposure to violent video games was a better predictor of the students' own violent behavior than their gender or their beliefs about violence," said Anderson. "Although gender aggressive personality and beliefs about violence all predict aggressive and violent behavior, violent video game play still made an additional difference.
and
A third new study in the book assessed 430 third-, fourth- and fifth-graders, their peers, and their teachers twice during a five-month period in the school year. It found that children who played more violent video games early in the school year changed to see the world in a more aggressive way, and became more verbally and physically aggressive later in the school year -- even after controlling for how aggressive they were at the beginning of the study. Higher aggression and lower pro-social behavior were in turn related to those children being more rejected by their peers.
"I was startled to find those changes in such a short amount of time," said Gentile. "Children's aggression in school did increase with greater exposure to violent video games, and this effect was big enough to be noticed by their teachers and peers within five months."
The study additionally found an apparent lack of "immunity" to the effects of media violence exposure. TV and video game screen time was also found to be a significant negative predictor of grades.
Original article is available by pdf: Violent Video Games Can Increase Aggression from APA Press Releases.
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