Good news!
I'm pleased to see this because it's another nail in the coffin of those who make emotive claims (based on nothing more than wishful thinking or bigotry) that video games/ heavy metal music/ violent porn/ roleplaying games/ other misunderstood scare story of the week "cause" people who play them to shoot up US high schools/ commit suicide/ perform acts of sexual violence/ have no social skills and thus should be banned.
It is becoming increasingly clear from credible research like this that these sorts of things actually provide an *outlet* for feelings and emotions that would otherwise end up being bottled up until they erupt into something truly dangerous.