Kevin Browne and Catherine Hamilton- Giachritsis (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. 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 socioeconomic status, intelligence, and parenting are taken into account, suggesting that some of the influence is independent of other factors.

The authors outline areas that need further investigation along with several public health recommendations. They write that population studies with large samples are needed to find out whether violence in the media leads to violent criminal behaviour. Currently, there is only weak evidence linking media violence directly to crime.

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 re
'"/>

Contact: Joe Santangelo
j.santangelo@elsevier.com
1-212-633-3810
Lancet
17-Feb-2005