Video Games and Adolescent Fighting
利用青少年风险行为调查数据，在控制性别等人口学变量后，电子游戏与打架行为的关联变得微弱且不显著，仅每日游戏时长超过4小时的个体存在正向关联。
Psychologists have found positive correlations between playing violent video games and violent and antisocial attitudes. However, these studies typically do not control for other covariates, particularly sex, that are known to be associated with both video game play and aggression. This study exploits the Youth Risk Behavior Survey, which includes questions on video game play and fighting as well as basic demographic information. With both parametric and nonparametric estimators, as there is accounting for more demographic covariates, the video game effects become progressively weaker. The overall link between video games and fighting is modest and not statistically significant. The remaining positive association appears only for individuals who play 4 or more hours per day.