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Defining exceptional cognition in older adults: A systematic review of cognitive super‐ageing.

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Title: Defining exceptional cognition in older adults: A systematic review of cognitive super‐ageing.
Authors: Powell, Alice (AUTHOR), Page, Zara A. (AUTHOR), Close, Jacqueline C. T. (AUTHOR), Sachdev, Perminder S. (AUTHOR), Brodaty, Henry (AUTHOR)
Source: International Journal of Geriatric Psychiatry. Dec2023, Vol. 38 Issue 12, p1-20. 20p.
Subjects: Online information services, Psychology information storage & retrieval systems, Medical information storage & retrieval systems, Systematic reviews, Cognitive aging, Episodic memory, Research funding, Descriptive statistics, Cognitive testing, MEDLINE, Old age
Abstract: Objective: A consistent approach to defining cognitive super‐ageing is needed to increase the value of research insights that may be gained from studying this population including ageing well and preventing and treating neurodegenerative conditions. This review aims to evaluate the existing definitions of 'super‐ageing' with a focus on cognition. Methods: A systematic literature search was conducted across PubMed, Embase, Web of Science, Scopus, PsycINFO and Google Scholar from inception to 24 July 2023. Results: Of 44 English language studies that defined super‐ageing from a cognitive perspective in older adults (60–97 years), most (n = 33) were based on preserved verbal episodic memory performance comparable to that of younger adult in age range 16–65 years. Eleven studies defined super‐agers as the top cognitive performers for their age group based upon standard deviations or percentiles above the population mean. Only nine studies included longitudinal cognitive performance in their definitions. Conclusions: Equivalent cognitive abilities to younger adults, exceptional cognition for age and a lack of cognitive deterioration over time are all meaningful constructs and may provide different insights into cognitive ageing. Using these criteria in combination or individually to define super‐agers, with a clear rationale for which elements have been selected, could be fit for purpose depending on the research question. However, major discrepancies including the age range of super‐agers and comparator groups and the choice of cognitive domains assessed should be addressed to reach some consensus in the field. Key points: There is no uniform definition of super‐ageing or cognitive super‐ageingMost studies define cognitive super‐ageing based on verbal memoryProposed definition should include other cognitive domains, stability over time and functionAn agreed definition would support a collaborative approach for associated factors and studying this group may highlight strategies to combat cognitive decline [ABSTRACT FROM AUTHOR]
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Database: Psychology and Behavioral Sciences Collection
Description
Abstract:Objective: A consistent approach to defining cognitive super‐ageing is needed to increase the value of research insights that may be gained from studying this population including ageing well and preventing and treating neurodegenerative conditions. This review aims to evaluate the existing definitions of 'super‐ageing' with a focus on cognition. Methods: A systematic literature search was conducted across PubMed, Embase, Web of Science, Scopus, PsycINFO and Google Scholar from inception to 24 July 2023. Results: Of 44 English language studies that defined super‐ageing from a cognitive perspective in older adults (60–97 years), most (n = 33) were based on preserved verbal episodic memory performance comparable to that of younger adult in age range 16–65 years. Eleven studies defined super‐agers as the top cognitive performers for their age group based upon standard deviations or percentiles above the population mean. Only nine studies included longitudinal cognitive performance in their definitions. Conclusions: Equivalent cognitive abilities to younger adults, exceptional cognition for age and a lack of cognitive deterioration over time are all meaningful constructs and may provide different insights into cognitive ageing. Using these criteria in combination or individually to define super‐agers, with a clear rationale for which elements have been selected, could be fit for purpose depending on the research question. However, major discrepancies including the age range of super‐agers and comparator groups and the choice of cognitive domains assessed should be addressed to reach some consensus in the field. Key points: There is no uniform definition of super‐ageing or cognitive super‐ageingMost studies define cognitive super‐ageing based on verbal memoryProposed definition should include other cognitive domains, stability over time and functionAn agreed definition would support a collaborative approach for associated factors and studying this group may highlight strategies to combat cognitive decline [ABSTRACT FROM AUTHOR]
ISSN:08856230
DOI:10.1002/gps.6034