Media violence and youth violence: a 2-year longitudinal study" which was written by Hopf et al. This study examined the relationship between violence in the media and violent delinquency in juveniles. As the title of this article suggests, the research is based on a two-year longitudinal study. The hypotheses for this study were multifold, and were based in large measure on existent hypothesis. The hypothesis of Hopf et al. related to an effect hypothesis that watching violence in the media contributes to aggressive behavior and a selection hypothesis which states that violently aggressive actions stimulates exposure to violence (Hopf et al., 2008, p. 79). As a result, the researchers in this article developed three sub-hypotheses: exposure to violent media at a young age contributes to violence, early playing of video games is the most effective way of contributing to violence in juveniles, and "exposure to media violence…is the strongest predictor...
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