Day-to-day associations between adolescents’ smartphone use before sleep and sleep outcomes


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Year of publication 2022
Type Appeared in Conference without Proceedings
MU Faculty or unit

Faculty of Social Studies

Description The study examined between- and within-person associations for adolescents' smartphone use and multiple sleep outcomes: sleep onset time, sleep onset latency, sleep duration, subjective sleep quality, and subjective daily sleepiness.The participants were 201 Czech adolescents (aged 13-17) who daily reported their sleep outcomes, daily stressors, and other media use for 14 consecutive days via a custom-made research app on their smartphones. The app also collected logs of the participants' smartphone use. Study found that interindividual differences within the average volume of smartphone use before sleep were not associated with differences in sleep outcomes. Study found that when adolescents used smartphones before sleep for longer than usual, they went to sleep earlier and slept longer. However, these two associations were weak. No other sleep outcomes were affected by the increased use of a smartphone before sleep on a given day. Study found no interaction effects for age, gender, insomnia symptoms, media use, or daily stressors. However, the association between smartphone use and earlier sleep onset time was stronger on nights before a non-school day. Findings suggest that the link between smartphone use and adolescent sleep is more complex, and not as detrimental, as claimed in some earlier studies.
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