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Salon
Salon
Science
Nicole Karlis

MYSTERIOUS: Smartphone dilemma is a trick question - You Need To See This

In May, a tweet from writer Adam Grant, a psychologist at Wharton and the author of "Give and Take," made its round in online parenting circles.

"The earlier kids get smartphones, the worse their mental health as adults," Grant said on Twitter. "Smartphones should wait until high school."

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