The New York Times:
EARLIER this summer the actor Jim Carrey, a star of the new superhero movie “Kick-Ass 2,” tweeted that he was distancing himself from the film because, in the wake of the Sandy Hook massacre, “in all good conscience I cannot support” the movie’s extensive and graphically violent scenes.
Other studies have followed consumption of violent media and its behavioral effects throughout a person’s lifetime. In a meta-analysis of 42 studies involving nearly 5,000 participants, the psychologists Craig A. Anderson and Brad J. Bushman found a statistically significant small-to-moderate-strength relationship between watching violent media and acts of aggression or violence later in life.
In a study published in the journal Pediatrics this year, the researchers Lindsay A. Robertson, Helena M. McAnally and Robert J. Hancox showed that watching excessive amounts of TV as a child or adolescent — in which most of the content contains violence — was causally associated with antisocial behavior in early adulthood. (An excessive amount here means more than two hours per weekday.)
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