Researchers are curious whether violent video games increase acts of violence. They ran a study where they observed 30 children during and after school; those who played First Person Shooters were significantly more likely to act aggressively on the playground, either with physical actions (e.g., shoving; pushing) or through forceful verbiage/communication (yelling; threatening; using harsh language towards others), r= .7, p<.05.
Can the researchers conclude that violent video games increase violence in children? Why or not?