Evidence of a Cumulative Effect of Violent Video Games on Aggression
In this study, 70 participants played video games for 20 minutes on three consecutive days. Those that played violent video games were increasingly likely to predict hostile endings to a story at the end of each consecutive day. Similarly, when asked to deliver punishment to a hidden opponent, the violent video game players chose a more severe punishment day by day. The control group showed no change in their hostile expectations or aggression. The researchers suggest that the reason behind this increasingly aggressive behavior is the way in which violent video gamers view the world and expect others to act.
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