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Relations between physiological and cognitive regulatory systems: infant sleep regulation and subsequent executive

Annie Bernier1, Stephanie M Carlson, Stéphanie Bordeleau

  • 1Department of Psychology, University of Montreal, Montreal, QC, Canada. annie.bernier@umontreal.ca

Child Development
|November 17, 2010
PubMed

Insights

Infant sleep regulation, particularly nighttime sleep, is linked to better executive functioning (EF) in children. This suggests sleep supports cognitive development, especially impulse control, in early childhood.

Area of Science:

  • Developmental Psychology
  • Neuroscience
  • Pediatrics

Background:

  • Executive functioning (EF) is crucial for cognitive development and is influenced by early life experiences.
  • Sleep regulation in infancy is a key developmental process with potential long-term implications.
  • Understanding the relationship between infant sleep and cognitive outcomes can inform early intervention strategies.

Purpose of the Study:

  • To investigate the prospective associations between infant sleep regulation and subsequent executive functioning.
  • To determine if nighttime sleep proportions in infancy predict later executive function performance.
  • To examine these relationships while controlling for relevant confounding factors.

Main Methods:

  • Longitudinal study design with 60 infants.
  • Sleep regulation assessed via parent sleep diaries at 12 and 18 months.
  • Executive functioning assessed at 18 and 26 months using standardized tasks.

Main Results:

  • Higher proportions of nighttime sleep at 12 and 18 months were associated with better executive functioning performance.
  • The strongest associations were observed for executive tasks requiring impulse control.
  • These findings remained significant after accounting for socioeconomic status, prior mental development, and verbal ability.

Conclusions:

  • Infant sleep regulation, specifically adequate nighttime sleep, is prospectively linked to the development of executive functions.
  • These results support the role of sleep in fostering higher-order cognitive functions, particularly those reliant on the prefrontal cortex.
  • Early sleep patterns may represent an important modifiable factor influencing cognitive trajectory.

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