Kevin Browne and Catherine Hamilton-Giachritsis of the University of Birmingham (UK) analysed data from six North American reviews looking at the effects of media violence on children.
They found that for passive viewing (television and film) and interactive viewing (video and computer games) there is consistent evidence of an association between younger children watching media violence and showing more aggressive play and behaviour, mainly in the short-term.
The effect is small but significant and especially relevant for boys, they conclude. The evidence was less consistent when considering older children and teenagers and long-term effects for all ages. The review acknowledges that family and social factors are likely to affect a child's response to violent imagery.
One UK study found that the effects of film violence were greater in young people who had grown up in violent families. However, the authors note that research has found that an affect persists even when socio-economic status, intelligence, and parenting are taken into account, suggesting that some of the influence is independent of other factors.
Professor Browne concludes: "Parents and caregivers might be recommended to exercise the same care with adult media entertainment as they do medication or chemicals around the home. Carelessness with material that contains extreme violent and sexual imagery might even be regarded as a form of emotional maltreatment of the child.
"There is an urgent need for parents and policy makers to take an educational rather than censorial approach. Parents and teachers can view age appropriate violent material with children and help them critically appraise what they see, in terms of its realism, justification and consequences. In this way caregivers can reduce the effect of violent imagery.”
MEDICA.de; Source: The Lancet