Average sleep duration varies significantly across different countries

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that average sleep duration varies significantly across different countries?

Yes. Evidence from cross-national studies demonstrates that average sleep duration varies significantly across different countries, influenced by various cultural, social, and environmental factors.

Verdict: SUPPORTED · 2 sources for, 0 against · Last checked 6 Aug 2026

The analysis

The claim states that average sleep duration varies significantly across different countries. Papers [1] and [7] directly examine international and cross-cultural differences in sleep duration, confirming significant variations between populations in different countries. Therefore, the claim is supported by the retrieved literature.

Evidence for · 2

A CROSS-CULTURAL COMPARISON OF SLEEP DURATION BETWEEN U.S. AND AUSTRALIAN ADOLESCENTS: THE EFFECT OF SCHOOL START TIME, PARENT-SET BEDTIMES, AND EXTRA-CURRICULAR LOAD

2012

This study found significant differences in sleep duration between adolescents in Australia and the United States, highlighting the role of extrinsic cultural factors.

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Short, M., Gradisar, M., Lack, L., Wright, H. R., Dewald, J. F., Wolfson, A., & Carskadon, M. (2012). A CROSS-CULTURAL COMPARISON OF SLEEP DURATION BETWEEN U.S. AND AUSTRALIAN ADOLESCENTS: THE EFFECT OF SCHOOL START TIME, PARENT-SET BEDTIMES, AND EXTRA-CURRICULAR LOAD. doi.org. https://doi.org/10.1177/1090198112451266

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More for · 1

Sleep and happiness: socio-economic, population and cultural correlates of sleep duration and subjective well-being in 52 countries

2023

This ecological study investigated sleep duration across 52 countries and noted considerable differences between countries in how much people sleep on average.

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Lajunen, T., Gaygısız, E., & Wang, W. (2023). Sleep and happiness: socio-economic, population and cultural correlates of sleep duration and subjective well-being in 52 countries. doi.org. https://doi.org/10.3389/frsle.2023.1118384

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Receipt History

first checked06 Aug 2026

judged → SUPPORTED · 7706 Aug 2026

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