The surprising origin of 4 features that superglue kids — and adults — to screens

What makes a person keep playing a video slot machine? Some of the same features that make children stay on social media apps or video games for too long.

Taken together, these four features can create a trancelike state that can keep us stuck on social media apps or video games for hours. Children are particularly vulnerable.

(Image credit: Paige Stampatori for NPR)