An new Iowa State University study finds it's a bad idea to have TV and video games in a child's bedroom, as they could lead to sleep and behavior problems, and trouble at school. The researchers also found that it leads to a greater risk of obesity and video game addiction. The study was published Monday, and found that children with TV in the bedroom watched programs and played video games that were more violent, increasing levels of physical aggression. It said kids spend over 60 hours a week in front of screens.