Night Mode Doesn't Actually Improve Sleep, BYU Researchers Find

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Good Night, Night Mode

By Dara Anderson Johnson (’21) in the Summer 2021 Issue

Is it time to give night mode a rest? In a recent study published in Sleep Health, BYU psychology researchers found that the night-mode function in smartphones—which was purported to improve sleep by reducing blue light—seems to have no effect. Instead, the results suggest that avoiding smartphone use altogether before bed can defend against other sleep-deterring factors, such as psychological stimulation.

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