A researcher has announced that, after “analyzing 130 research reports on more than 130,000 subjects worldwide”, he is able to prove “conclusively that exposure to violent video games makes more aggressive, less caring kids”.
I’m not sure about “conclusively proven” and many on slashdot have issues with the research. But there’s no point in being naive about it: experiences and activities influence our views, thoughts, and beliefs (duh). Even the US Army recognizes the value of games in developing skills (mindsets?) of future soldiers.