There's probably no study in the world that will convince parents with dead set beliefs that video games create violent individuals otherwise.
I don't have any advice for you. Sorry. You'll get to make your own choices soon enough if you move out.
While that's true, there's nothing wrong with the OP trying to point out that there is NO reliable study which has shown that violent video games = violent individuals. considering how popular video and computer games are, quite a few people would be locked up.
Also consider that long before video games there have been outbreaks of violence...for example, Vikings raping and pillaging, the Huns conquering Asia. Electronic simulations of violence are not necessary for homicidal tendencies. Ted Bundy was a serial killer long before Doom and other violent video/computer games.
http://en.wikipedia.org/wiki/Video_game_controversy#Crime_and_violence
excerpts:
However, several major studies by groups such as The Harvard Medical School Center for Mental Health, The Journal of Adolescent Health, and The British Medical Journal have shown no conclusive link between video game usage and violent activity." One study did find an increase in reports of bullying, noting, "Our research found that certain patterns of video game play were much more likely to be associated with these types of behavioral problems than with major violent crime such as school shootings.
t is also worth noting that violent crime rates in the USA have declined dramatically since the early 1990s, among both juveniles and adults, even as sales of violent video games exploded and such games became increasingly graphic over time.
I think that the 3 essential points attempting to convey is this:
1) video/computer games do not make someone violent anymore than watching violent/disturbing movies will.
2) Any comparison is mixed at best; People can have homicidal/violent tendencies without violent entertainment (ie Vikings, Huns), and if everyone was turned into a violent person, too many people would be locked up.
3) violent games as well as violent movies don't turn someone into a violent person generally due to the ability to distinguish between reality and fiction, to be able to have a sense of humanity and compassion, and to accept that violence doesn't solve problems in real life the way it does in fantasy/fiction.