Science University Research Symposium (SURS)
Publication Date
Fall 11-10-2025
College
College of Sciences & Mathematics
Department
Psychological Science, Department of
SURS Faculty Advisor
Michael Oliver
Presentation Type
Metadata Only
Abstract
Metadata Analysis on the relationship between sleep, depression, and cognition in older adults
Abstract
Previous research has revealed that both sleep and depression play significant roles in influencing memory. Adequate sleep facilitates memory consolidation during rest, ultimately enhancing cognitive performance. In contrast, elevated levels of depression are associated not only with physical symptoms, but also with declines in cognitive functioning. The present study aims to determine whether the cognitive benefits of sufficient sleep duration outweigh the detrimental effects of depression on memory. We hypothesize that sleep duration will have a stronger influence on memory consolidation in older adults than depression. Additionally, while depression is expected to negatively affect memory, we predict that its impact will not outweigh the protective benefits of adequate sleep. Using data from the National Social Life, Health, and Aging Project (Round 2, 2010–2011), we calculated a composite MoCA score by averaging results across five cognitive domains. From the same dataset, participants also reported their levels of depression and perceived restfulness. The linear regression analysis revealed statistically significant positive relationships between memory and both sleep (p < .001) and depression (p< .001). However, there was no significant difference in the strength of these relationships (p < .001). These findings suggest that both sleep and depressive symptoms significantly influence memory performance. Consequently, maintaining adequate sleep and monitoring depressive symptoms are essential for preserving cognitive health in older adults.
Recommended Citation
miller, sara; Stephens, Kristie; Harris, Grayson; and Flegeance, Vincent, "Metadata Analysis on the relationship between sleep, depression, and cognition in older adults" (2025). Science University Research Symposium (SURS). 303.
https://repository.belmont.edu/surs/303
