US research has supported the idea that violence in video games and films an on TV has an influence on Boys' aggressive behaviour. The National Institutes of Health conducted a study on 22 boys aged 14-17 who watched 60 violent scenes, ranked from low to moderate. The boys were then asked to rate which clips they thought were more aggressive and their brains were scanned using functional magnetic resonance imaging, to show which parts of the brain are active. Researchers also attached electrodes to their fingers to detect the increase of sweat as an emotional response. They found that the longer the boys watched videos the less they responded to the violence within them.
Dr. Grafman concluded that exposure to violent videos inhibits emotional reactions to similar aggressive videos over time. Normal adolescents will feel fewer emotions over time as they are exposed to similar videos. This could produce more violent reactions from teenagers becasue the emotional component associated with aggression is reduced.
The implications of this research include the idea that teenagers could become less sensitive to violence, more accepting of violence and more likely to commit aggressive acts, which would lead to social problems.
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