London Metropolitan University - Joker's violence is a joke

A psychology lecturer has defended the low age restrictions of the latest Batman film, The Dark Knight. Simon Moore, who researches violence in films at London Metropolitan University, said few children would be adversely affected by Heath Ledger's portrayal of the Joker in the 12A-certified film. Dr Moore said: "You can't say the stimulus of a film is going to have an effect on all children. If that was the case, why aren't there any reported stabbings in cinemas?"