"Studies have found that children who watch 10 or more hours of TV a week have lower reading scores and perform less well academically than comparable youngsters who spend less time watching television. Long-term studies suggest several reasons. One study of 2,500 children conducted at Children's Hospital in Seattle and published in April in the journal Pediatrics found that the more TV watched by toddlers aged 1 to 3, the greater their risk of attention problems at age 7. For each hour watched a day, the risk of developing attention-deficit hyperactivity disorder increased by nearly 10 percent. Children with this problem find it hard to concentrate, have difficulty organizing and exhibit impulsive behavior."