Violent video games do not appear to increase aggressive behavior
(Emphasis mine.) The study has not yet been published, and of course GamePolitics.com is an advocate for the gaming industry, so keep those biases in mind. Still, it's nice to see some counter to the endlesss anti-video game propaganda that politicians attempt to scare up votes with.
Results from the current meta-analysis found that there were about 25 recent studies on violent video game effects, with conflicting results.
Overall results of the study found that although violent video games appear to increase people’s aggressive thoughts (which it would not be surprising that people are still thinking about what they were just playing), violent games do not appear to increase aggressive behavior.