The effect that violent films and games have on our minds, and the implications for their place in society, has been a source of much heated debate. Now, a new study looks set to fan the flames even further. Several studies have found that violent media can desensitise people to real acts of violence, but Brad Bushman from the University of Michigan and Craig Anderson from Iowa State University have produced the first evidence that this can actually change a person's behaviour, affecting their decisions to help others in need.
Using professional actors, they found that after 20 minutes of playing a violent video game, people who heard a loud fight that ended with an injury took longer to help the victim, and believed that the fight was less serious. Likewise, people who watched a violent film took longer to help an injured woman to pick up her crutches outside ...