Battling with kids over devices? Here are the best ways to enforce screen time rules | CNN

Battling with kids over devices is increasingly tied to measurable risks, as new studies link overnight screen use to worse behavior and harms later on. A national survey of nearly 8,000 youths aged 12 to 14, published in June in Acta Paediatrica, found that children who use screens in their bedrooms overnight show greater problematic screen use one year later. The findings align with a second study published Tuesday in the Journal of Adolescent Health, which reports higher likelihood of cyberbullying and being cyberbullied for youths viewing screens at night. Both studies used data from the Adolescent Brain Cognitive Development Study. Dr. Jason Nagata of UCSF, lead author, said monitoring drops when phones remain in bedrooms. The reports also note the average teen spends nearly an hour on phones between 10 p.m. and 6 a.m. on school nights.