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A woman reads her phone on a New York subway.
A passenger wearing a face mask in a subway in New York City, US, on October 22, 2022.
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"The world feels a lot scarier than it used to, and kids are experiencing a lot of anxiety and stress," said Stew Friedman, a professor emeritus at The Wharton School.

This story orginally published on April 13, 2022 and was updated on January 30, 2023.

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"Over the last three years, a lot of people have been asking: 'What's enough for me?'" Robert Kelley, a professor at Carnegie Mellon University's Tepper School of Business, told Insider.