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Positive affect and sleep: A systematic review.

Anthony D Ong1, Sara Kim1, Sarah Young2

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PubMed
Summary
This summary is machine-generated.

Positive affect, or positive emotions, may influence sleep quality, but research is limited. This review found weak evidence for a link, highlighting the need for more rigorous studies on positive affect and sleep.

Keywords:
AnhedoniaBipolar disorderManiaPositive affectPositive emotionsSleepSleep durationSleep quality

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Area of Science:

  • Psychology
  • Sleep Science
  • Affective Science

Background:

  • Sleep disturbances are linked to mood disorders and psychopathology.
  • The impact of positive affective states on sleep remains understudied.
  • Understanding the positive affect-sleep relationship is crucial for mental well-being.

Purpose of the Study:

  • To systematically review existing research on the association between positive affect and sleep.
  • To synthesize findings from various study designs, including cross-sectional, longitudinal, ambulatory, and experimental.
  • To identify gaps in the literature and guide future research directions.

Main Methods:

  • A comprehensive literature search was conducted across PubMed, PsycINFO, and CINAHL.
  • Two independent reviewers assessed study characteristics and risk of bias.
  • 44 studies were included from 10,853 retrieved articles.

Main Results:

  • The majority of included studies (68.2%) had a high risk of bias or were methodologically weak.
  • Consistent evidence for an association between positive affect and sleep was primarily found using aggregate or trait measures in healthy populations.
  • Limited data exist on this association within clinical populations.

Conclusions:

  • Current evidence for a positive affect-sleep link is largely based on low-quality studies.
  • More rigorous, theoretically informed research is necessary to establish firm conclusions.
  • Future studies should focus on improving methodological quality and exploring clinical implications.