GOOD
Courtesy of John S. Hutton, MD

A report from Common Sense Media found the average child between the ages of 0 and 8 has 2 hours and 19 minutes of screen time a day, and 35% of their screen time is on a mobile device. A new study conducted by the Cincinnati Children's Hospital published in the journal, JAMA Pediatrics, found exactly what all that screen time is doing to your kid, or more specifically, your kid's developing brain. It turns out, more screen time contributes to slower brain development.

First, researchers gave the kids a test to determine how much and what kind of screen time they were getting. Were they watching fighting or educational content? Were they using it alone or with parents? Then, researchers examined the brains of children aged 3 to 5 year olds by using MRI scans. Forty seven brain-healthy children who hadn't started kindergarten yet were used for the study.

They found that kids who had more than one hour of screen time a day without parental supervision had lower levels of development in their brain's white matter, which is important when it comes to developing cognitive skills, language, and literacy.

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