Journal of Behavioral Medicine

, Volume 40, Issue 2, pp 360–365 | Cite as

Dispositional optimism and sleep quality: a test of mediating pathways

  • Bert N. Uchino
  • Matthew Cribbet
  • Robert G. Kent de Grey
  • Sierra Cronan
  • Ryan Trettevik
  • Timothy W. Smith


Dispositional optimism has been related to beneficial influences on physical health outcomes. However, its links to global sleep quality and the psychological mediators responsible for such associations are less studied. This study thus examined if trait optimism predicted global sleep quality, and if measures of subjective well-being were statistical mediators of such links. A community sample of 175 participants (93 men, 82 women) completed measures of trait optimism, depression, and life satisfaction. Global sleep quality was assessed using the Pittsburgh Sleep Quality Index. Results indicated that trait optimism was a strong predictor of better PSQI global sleep quality. Moreover, this association was mediated by depression and life satisfaction in both single and multiple mediator models. These results highlight the importance of optimism for the restorative process of sleep, as well as the utility of multiple mediator models in testing distinct psychological pathways.


Depression Health Life satisfaction Optimism Sleep 



Support for this research was generously provided by Grant Number R21 AG029239 from the National Institute on Aging.

Compliance with ethical standards

Conflict of interest

Bert N. Uchino, Matthew Cribbet, Robert G. Kent de Grey, Sierra Cronan, Ryan Trettevik, and Timothy W. Smith declares that they have no conflict of interest.

Human and animal rights and Informed consent

All procedures followed were in accordance with ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2000. Informed consent was obtained from all patients for being included in the study.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Bert N. Uchino
    • 1
  • Matthew Cribbet
    • 2
  • Robert G. Kent de Grey
    • 1
  • Sierra Cronan
    • 1
  • Ryan Trettevik
    • 1
  • Timothy W. Smith
    • 1
  1. 1.Department of Psychology and Health Psychology ProgramUniversity of UtahSalt Lake CityUSA
  2. 2.Department of Psychological SciencesTexas Tech UniversityLubbockUSA

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