It is the accumulation of risk factors that tends to lead to aggressive or violent behaviour. The research reviewed here demonstrates that violent video game use is one such risk factor.
A positive association between violent video game use and increased aggressive behavior was found in most (12 of 14 studies) but not all studies published after the earlier meta‐analyses. This continues to be a reliable finding and shows good multi‐method consistency across various representations of both violent video game exposure and aggressive behavior.
However, the group of academics said they felt the methodology of the research was deeply flawed as a significant part of material included in the study had not been subjected to peer review. "I fully acknowledge that exposure to repeated violence may have short-term effects - you would be a fool to deny that - but the long-term consequences of crime and actual violent behaviour, there is just no evidence linking violent video games with that," said one.
"If you play three hours of Call of Duty you might feel a little bit pumped, but you are not going to go out and mug someone."