Adding to the growing evidence suggesting violent video games may make people more aggressive, a new study shows young men who play them had decreased activity in the brain areas associated with inhibition, attention and decision-making. FYI, less inhibition can mean more aggression.

The paper’s authors analyzed published studies on the topic of violence and video games, and were able to conclude that “though there is evidence that violent video games cause aggression in a laboratory setting, there is no evidence that violent video games cause violence or crime.”