silentbrad writes: From The Guardian: "A growing number of young children are acting out violent scenes from adult computer games in the playground, teachers have warned. Pupils as young as four and five are simulating car crashes and graphic injuries as a result of playing games unsupervised in their bedrooms, the Association of Teachers and Lecturers (ATL) annual conference was told. Primary school teachers said the games were making their pupils far more aggressive and addicted to "fantasy worlds that separate them from reality". Doctors found children who continually play computer games may be more likely to develop tendinitis – an inflammation between the muscles and bones – and suffer from seizures, teachers said. Psychologists have expressed concerns that playing some games make children more aggressive. Alison Sherratt, a teacher at Riddlesden St Mary's Church of England primary school in Keighley, West Yorkshire, said her four- and five-year-old pupils spend their breaks pretending to "throw themselves out of the window of the play car in slow motion" and act out blood "spurting from their bodies". "We all expect to see rough and tumble, but I have seen little ones acting out quite graphic scenes in the playground and there is a lot more hitting, hurting and thumping in the classroom for no particular reason." She said her pupils believed the violence depicted in computer games was real and tried to recreate it in play. "Obesity, social exclusion, loneliness, physical fitness, sedentary solitary lives – these are all descriptions of children who are already hooked to games Sadly there is a notable correlation between the children who admit to playing games and those who come to school really tired," she said.