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The Journals of Gerontology Series B: Psychological Sciences and Social Sciences Advance Access originally published online on February 9, 2009
The Journals of Gerontology Series B: Psychological Sciences and Social Sciences 2009 64B(2):180-187; doi:10.1093/geronb/gbn037
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© The Author 2009. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org.

Self-Reported Sleep Quality Predicts Poor Cognitive Performance in Healthy Older Adults

Robert D. Nebes, Daniel J. Buysse, Edythe M. Halligan, Patricia R. Houck and Timothy H. Monk

Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh Medical Center

Address correspondence to Robert D. Nebes, PhD, Department of Psychiatry, University of Pittsburgh Medical School, 3811 O’Hara Street, Pittsburgh, PA 15213. Email: nebesrd{at}upmc.edu


   Abstract

This study examined the relation between sleep quality and cognitive performance in older adults, controlling for common medical comorbidities. Participants were community volunteers who, while not selected on the basis of their sleep, did report substantial variability in sleep quality. Good and poor sleepers differed on tests of working memory, attentional set shifting, and abstract problem solving but not on processing speed, inhibitory function, or episodic memory. Poor sleep was also associated with increased depressive symptomatology but only for functional symptoms (e.g., decreased concentration) and not for mood (e.g., sadness). The relationships between sleep quality and cognition were not explained by confound factors such as cerebrovascular disease, depression, or medication usage. Sleep problems may contribute to performance variability between elderly individuals but only in certain cognitive domains.

Key Words: Cognition • depression • sleep

Received March 24, 2008; Accepted September 5, 2008


Decision Editor: Rosemary Blieszner, PhD


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