April, 18th, 2017 (Sagepub/ACCM). A study published online in the Personality and Social Psychology Bulletin focused on the impacts of media violence on aggression in seven countries of the world. In Australia, China, Croatia, Germany, Japan, Romania and the United States, participants reported aggressive behaviors, media use habits, and several other known risk and protective factors for aggression.

Across nations, exposure to violent screen media was positively associated with aggression. This effect was partially mediated by aggressive cognitions and empathy. The media violence effect on aggression remained significant even after statistically controlling a number of relevant risk and protective factors (e.g., abusive parenting, peer delinquency), and was similar in magnitude to effects of other risk factors. In support of the cumulative risk model, joint effects of different risk factors on aggressive behavior in each culture were larger than effects of any individual risk factor.

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