Iowa State University researcher Dr. Doug Gentile studied 2,500
children and adolescents and found that violent video games do indeed foster
hostile actions and aggressive behaviors. Here’s the money quote:

We know a lot about how to be an effective teacher, and we know a lot
about how to use technology to teach. Video games use many of these techniques
and are highly effective teachers. So we shouldn’t be surprised that violent
video games can teach aggression.

Get the full
story at the ISU News Service