Compared with children who had less than 30 minutes of screen time per day, children exposed to more than two hours were five times more likely to exhibit clinically significant “externalizing” behavioural problems such as inattention — and are more than seven times more likely to meet the criteria for attention deficit hyperactivity disorder (ADHD),
This is a new study from Canada.
Current Canadian guidelines call for no more than two hours of screen time a day at that age. But our research suggests that less screen time is even better.
Government guidelines vary from country to country. The worldwide scientific consensus is that the best amount of screen time including smartphones, tablets, and televisions, is zero.