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Related Experiment Video

Updated: Jul 1, 2026

Physical Activity Measurement in Children Accepting Table Tennis Training
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Physical Activity Measurement in Children Accepting Table Tennis Training

Published on: July 27, 2022

Heterogeneous Associations Between Objectively Measured Screen Time and Sleep in Early Adolescence.

Sierra Clifford1, Leah D Doane1, Kathryn Lemery-Chalfant1

  • 1Arizona State University, Department of Psychology, Tempe, AZ, United States.

Technology, Mind, and Behavior
|June 30, 2026
PubMed
Summary

Screen time in early adolescence is linked to later bedtimes and more variable sleep duration. Objective measures show modest associations, suggesting moderate screen use may not significantly harm sleep quality.

Keywords:
actigraphyearly adolescentobjective measurementscreen timesleep

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Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
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Published on: October 2, 2019

Area of Science:

  • Adolescent Sleep Science
  • Digital Media Use
  • Objective Sleep Measurement

Background:

  • Early adolescence presents risks for sleep disruption, potentially worsened by electronic media.
  • Existing research on screen time and adolescent sleep is inconsistent, often relying on self-reports and neglecting sleep variability.

Purpose of the Study:

  • To investigate the association between objective screen time and sleep timing/quality in adolescents.
  • To examine how total screen time, social media, and mobile gaming relate to sleep patterns, including variability.

Main Methods:

  • Utilized objective screen time data (scraped from mobile devices) and actigraphy for sleep assessment in 677 adolescent twins.
  • Employed path analysis for person-level associations and three-level models for day-level analyses.
  • Analyzed sleep timing, quality indicators, sleep variability, and day-to-day fluctuations.

Main Results:

  • Higher overall screen time correlated with later bedtimes and increased variability in wake time and sleep duration.
  • Social media use was linked to later bedtimes and greater sleep duration variability.
  • Day-level screen time showed a weak association with later bedtime on the same night; mobile gaming had no significant sleep associations.

Conclusions:

  • Objective screen time shows modest, mixed associations with adolescent sleep patterns, particularly concerning variability.
  • Findings suggest moderate screen use is not strongly detrimental to sleep, but individual factors may moderate effects.
  • Future research should explore nuanced objective measures and moderators of screen time-sleep relationships.