Preschoolers who spend more than two hours per day on smartphones and tablets are seven times more likely to develop the symptoms of ADHD, according to new research.
The study of nearly 3,500 Canadian children aged 3-5 found that those who had over two hours of screen time per day were also five times more likely to display inattention, acting out, and hyperactivity compared with those who spent less than 30 minutes on a screen per day.
