Associations of chronotype with social jetlag and behavioral problems in preschool children

Chronobiology International
Yuriko DoiMakoto Uchiyama

Abstract

The timing, duration, and intensity of sleep are determined by the interaction between a sleep-wake-dependent homeostatic process and a sleep-wake-independent, intrinsic, clock-like circadian process. Chronotype represents individual differences in diurnal preferences, which are not only genetically determined but also influenced by social and environmental factors. Thus, the discrepancy between biological and social clocks, so-called "social jetlag", occurs. Chronotype, social jetlag, and the links between chronotype and behavioral problems are well documented in adults and adolescents. However, such studies on young children are limited. We conducted a survey of sleep and health for preschool children attending kindergarten or childcare centers in Wako, Okayama and Kurashiki cities, Japan, between May and July 2012. A total of 654 children aged 4-6 years (342 boys and 312 girls, with an average age of 4.7 years) were assessed using the Children's ChronoType Questionnaire and the Strength and Difficulties Questionnaire. Morning (M)-type, neither (N)-type and evening (E)-type accounted for 36.2%, 54.0% and 9.8% of the participants, respectively. The weekday-to-weekend differences in midsleep time--originally proposed as the con...Continue Reading

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Citations

Mar 2, 2016·Chronobiology International·Laura K Zimmermann
May 6, 2016·Chronobiology International·Fabio FabbianRoberto Manfredini
Aug 25, 2018·Zeitschrift für Kinder- und Jugendpsychiatrie und Psychotherapie·Alexander Prehn-Kristensen, Robert Göder
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Aug 20, 2021·Journal of Child Psychology and Psychiatry, and Allied Disciplines·Michal Kahn, Michael Gradisar

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