Video Games Violent Effects

How much of the violence of Video Games have a negative effect on children's behavior?

I do media and courses Level A should be primary research. An insightful answer to this question would help me loads, thanks to all who responded! This is similar to others I have posted this question but this time I'm looking specifically at violent video games.

The "Scope" is difficult to quantify the research to There are no final decision taken. Researchers such as Craig Anderson and Brad Bushman Doug Gentile many studies that examine the use of violent video games and aggressive. What they found is that violent video games seem to give rise to an increase in aggressive behavior. However, researchers such as Chris Ferguson, and Cheryl Olson found no effect or have argued that most of the studies carried out by those who find these effects are due to a number of reasons, including improper definitions and methods Measurement of aggressive behavior or publication bias. Another is that few longitudinal studies have been conducted, then no effect will be temporary. A study on school shooters and their risk factors identified many other factors are more predictive of violent behavior, most of which are common to all criminal conduct. These variables were things as a history of physical and sexual abuse or alcohol or drug problems. The answer is actually what is conclusive. More research should be done, and like everything, it is possible that the answer is moderation is key.