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Updated: Nov 11, 2025

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
Published on: October 2, 2019
Screen time use impacts low-income preschool children's sleep quality, tiredness, and ability to fall asleep
Nicole A Waller1, Nanhua Zhang2, Adrienne H Cocci3
1Early Childhood Health, National Kidney Foundation of Michigan, New Orleans, LA, USA.
Insights
Higher screen time in preschoolers is linked to poorer sleep quality, increased daytime tiredness, and difficulty falling asleep. These findings highlight the need for interventions to manage children's screen exposure for better sleep health.
Area of Science:
- Pediatric Health
- Sleep Science
- Public Health
Background:
- Sleep is a critical component of overall health, particularly in children.
- Previous research indicates a correlation between screen time and diminished sleep quality in pediatric populations.
- Understanding these associations is crucial for developing targeted health interventions.
Purpose of the Study:
- To investigate the relationship between screen time and sleep characteristics in low-income preschoolers.
- To analyze how screen usage patterns affect sleep quality, daytime tiredness, and sleep onset in young children.
Main Methods:
- Cross-sectional analysis of baseline data from 1,700 preschoolers across 50 preschool centers.
- Parental reports on daily/weekly screen time, sleep quality, daytime tiredness, and sleep onset difficulties.
- Mixed-effects linear regression models were employed to analyze the associations, controlling for demographic factors.
Main Results:
- Increased screen time was significantly associated with greater difficulty falling/staying asleep, increased daytime tiredness, and poorer sleep quality (p < .001).
- Black children reported higher weekly screen time compared to non-Black children (r=0.23, p < .001).
- Daytime tiredness was linked to Black race, Hispanic/Latino ethnicity, and parental education levels.
Conclusions:
- This study corroborates existing evidence linking screen time to adverse sleep outcomes in children.
- Further research with objective measures of screen time, sleep, and physical activity is warranted.
- Findings suggest that interventions aimed at reducing children's screen time may positively impact sleep health and warrant investigation.
Background:
Sleep is increasingly recognized as a vital part of health. Screen time has been linked to sleep quality in children. The purpose of this study was to analyze associations between screen time and sleep characteristics among low-income preschoolers.
Methods:
A total of 1,700 preschool-aged children participated in this study at 50 federally and state-funded preschool centers in Michigan. Baseline measurement for an ongoing longitudinal intervention trial was obtained for cross-sectional use. At baseline, parents reported the number of hours their child spent engaging in screen time on a typical week day and weekend. An aggregate measure of total screen time was created. Parents reported on the quality of their child's sleep, how often they were tired during the day, and whether they had difficulty falling asleep. A mixed model linear regression was created to analyze data.
Results:
Controlling for child's age, race, and parental income, children who engaged in more screen time were significantly more likely to have more trouble falling or staying asleep, be tired during the day, and had worse quality of sleep (P values = .004, .006 and .001, respectively). Spearman correlations of screen time, sleep variables and demographics show parents of Black children reported significantly higher weekly screen time than parents of non-Black children (r = 0.23, P < .001) and that tiredness was associated with Black race (r = 0.15, P < .001), Hispanic/Latino ethnicity (r = -0.14, P < .001), and parental education (r = 0.06, P = .016).
Conclusion:
This report confirms prior associations between screen time and sleep reported in other pediatric populations. Further research is needed to confirm these results in other populations using more rigorous measures of screen time, sleep, and physical activity, as well as longitudinal assessments. Despite these limitations, findings suggest that interventions to help parents limit children's screen time and impact their sleep health merit investigation.
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