The number of American kids watching online videos every day has more than doubled, and they're glued to them for nearly an hour a day — twice as long as they were four years ago, the AP reports.
Why it matters: "It really is the air they breathe," said Michael Robb, senior director of research for the nonprofit Common Sense Media, which issued the report.
The group tracks young people's tech habits and offers guidance for parents.
The survey of American youth included the responses of 1,677 young people, ages 8 to 18.
It found that 56% of 8- to 12-year-olds and 69% of 13- to 18-year-olds watch online videos every day.
In 2015, the last time the survey was conducted, those figures were 24% and 34%, respectively.
The margin of error was +/- 3 points.
Overall screen time didn't change much in those four years:
The average tween (8 to 12) spent 4 hours, 44 minutes with entertainment media on digital devices each day.
For teens, it was 7 hours, 22 minutes.
That didn't include time using devices for homework, reading books or listening to music.
What to watch: YouTube said that, in the coming months, it will share details on ways the company is rethinking its approach to kids and families.
