I’ve often been one to scoff at the media’s suggestion that violent video games lead to violence in culture. But it turns out there is quite a lot of academic evidence linking video games to aggressive behaviour:
C. A. Anderson et al.’s (2010) extensive meta-analysis of the effects of violent video games confirms what these theories predict and what prior research about other violent mass media has found: that violent video games stimulate aggression in the players in the short run and increase the risk for aggressive behaviors by the players later in life… Yet the results of meta-analyses are unlikely to change the critics’ views or the public’s perception that the issue is undecided because some studies have yielded null effects, because many people are concerned that the implications of the research threaten freedom of expression, and because many people have their identities or self-interests closely tied to violent video games.
That’s just one. It’s also worth hitting up Google Scholar to see the number of papers on this issue. Food for thought.