However, studies also show that video games with violent content are linked to more aggressive behavior in teens. This is a concern because most of the popular video games contain violence.
Part of the increase in aggressive behavior is linked to the amount of time children are allowed to play video games—and daily media use by children is increasing significantly.
A 2010 survey by the Kaiser Family Foundation found that youth age 8 to 18 devote seven-and-a-half hours a day to entertainment media. Less than half of the kids surveyed said their parents have rules about the shows and games they can watch or play.
In interactive video games, players are encouraged to identify with and role play their favorite characters. Players move up in game levels as their character masters skill and wins. In a video game about stock cars, winning may mean winning the race. But in many of the popular games, players move up levels by winning fights or battles. Players directly benefit from engaging in acts of violence.
Gentile & Anderson (2003) state that playing video games may increase aggressive behavior because violent acts are continually repeated throughout the video game. This method of repetition has long been considered an effective teaching method in reinforcing learning patterns.
Research has also found that, controlling for prior aggression, children who played more violent video games during the beginning of the school year showed more aggression than other children later in the school year. (Pediatrics, Nov. 2008)