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Association between puberty and delayed phase preference

M A Carskadon1, C Vieira, C Acebo

  • 1Department of Psychiatry and Human Behavior, E. P. Bradley Hospital/Brown University, E. Providence, Rhode Island 02915.

Sleep
|April 1, 1993
PubMed
Summary
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Adolescent sleep patterns show a biological shift towards later wake times, not just psychosocial factors. Pubertal status significantly impacts this phase preference delay in girls, suggesting a need to revise current sleep understandings.

Area of Science:

  • Sleep Science
  • Adolescent Development
  • Chronobiology

Background:

  • Adolescents typically exhibit later sleep-wake times than younger children, often attributed to psychosocial influences.
  • The adolescent sleep-wake phase delay is a well-documented phenomenon impacting daily functioning.
  • Existing research often overlooks potential biological underpinnings for this shift.

Purpose of the Study:

  • To investigate the role of biological processes in the adolescent sleep-wake phase delay.
  • To examine the relationship between pubertal status and morningness/eveningness (M/E) preferences in adolescents.
  • To differentiate between biological and psychosocial factors influencing adolescent sleep timing.

Main Methods:

  • Surveyed 183 sixth-grade boys and 275 sixth-grade girls on morningness/eveningness (M/E) and pubertal status.

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  • Assessed school environment and birth order as potential confounding variables.
  • Utilized validated questionnaires to quantify sleep phase preferences and pubertal development.

    • Main Results:

    • A significant correlation was observed between pubertal status and M/E preference in girls.
    • A similar, though not statistically significant, trend was noted in boys.
    • No association was found between M/E preference and psychosocial factors like school environment or birth order.

    Conclusions:

    • Biological factors, particularly pubertal development, play a significant role in the adolescent sleep-wake phase delay.
    • The findings challenge the prevailing view that psychosocial factors alone explain adolescent sleep pattern changes.
    • Current understandings of adolescent sleep may require revision to incorporate biological influences.