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Journal of Aging and Health
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Negative Life Events and Cognitive Performance in a Population of Older Adults

Christopher B. Rosnick, PhD

University of South Florida, Tampa

Brent J. Small, PhD

University of South Florida, Tampa

Cathy L. McEvoy, PhD

University of South Florida, Tampa

Amy R. Borenstein, PhD

University of South Florida, Tampa

James A. Mortimer, PhD

University of South Florida, Tampa

Objectives: This study examined the association between negative life events in the past year and cognitive performance in a population of older adults. Methods: Secondary data analysis was conducted on 428 participants from the Charlotte County Healthy Aging Study. Participants completed tests of episodic memory, attention, and psychomotor speed and endorsed the presence and severity of 24 life events. Life events were examined in the aggregate as well as individually. Results: Hierarchical multiple regression results suggest no significant relationship between the aggregate frequency and severity measures of negative life events and cognitive performance. At the individual-event level, individuals who experienced the injury or illness of a friend during the past year and rated it as having more of an effect on their lives performed better on all three cognitive tasks. However, individuals who reported having less money to live on over the past year and rated the event as having more of an effect on their lives performed more poorly on the psychomotor speed tasks. Discussion: The findings support previous research indicating that using estimates of individual stressors rather than aggregate stress measures increases the predictive validity of stress measurement. Furthermore, the individual negative life events can have both a positive and a negative effect, which nullify one another when using the sum score of events.

Key Words: cognition • aging • acute stress • negative life events

Journal of Aging and Health, Vol. 19, No. 4, 612-629 (2007)
DOI: 10.1177/0898264307300975
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