Gamespot is a very important gaming site, which is very reliable. It has thousands (if not millions) of users. You can find this site anytime you search something gaming related.
This article talks about the famous debate: do video games make you violent? They show a new study done about this which puts an answer to this question. There is no concrete evidence to show that videogames make you violent. I personally agree with this. Why would you be affected by video games, but not by movies? If someone commits a violent crime, you should not put the blame on the video game he played. He already was mentally ill before playing that video game, and probably would have done it without playing it.