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Birth Cohort Differences in Cognitive Aging: Secular Trends Over 30 Years in Three Swedish Samples
Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI).ORCID-id: 0000-0002-0091-2005
University of Gothenburg, Gothenburg, Sweden.
University of Gothenburg, Gothenburg, Sweden.ORCID-id: 0000-0002-1996-3435
2019 (Engelska)Konferensbidrag, Muntlig presentation med publicerat abstract (Refereegranskat)
Abstract [en]

During the 20th century there has been a successive rise in mean intelligence (i.e. Flynn effect), where later born cohorts tend to outperform earlier born. Flynn effects have been reported regarding numerous cognitive abilities, and over age ranges from infants to 95 year olds. Less is known regarding possible birth cohort differences in rates of cognitive change in old age. We conducted a series of studies with the aim to investigate possible birth cohort differences in both level of cognitive performance and rate of change. We analyzed data from three representative, population based birth cohorts (born 1901-1902, 1906-07, and 1930) drawn from the Gerontological and Geriatric Population Studies in Gothenburg (H70), with measures on the same cognitive tests at the same ages (i.e., 70, 75 and 79 years). The results showed that later born cohorts outperformed earlier born on all cognitive measures (i.e., spatial ability, logical reasoning, verbal ability, perceptual-motor-speed, and long-term recognition memory), but also that later born cohorts declined at a faster rate on three cognitive outcomes (spatial ability, reasoning, and perceptual-motor-speed). Cohort differences in level of cognitive performance were expected and in line with previous studies, but our findings of cohort differences in rate of change are novel. A potential explanation for the cohort differences in rate of cognitive decline relates to differences in the average age of onset of the cognitive decline due to cohort differences in cognitive reserve. Another possible explanation relates to possible cohort differences in selective survival.

Ort, förlag, år, upplaga, sidor
2019.
Nationell ämneskategori
Gerontologi, medicinsk/hälsovetenskaplig inriktning
Identifikatorer
URN: urn:nbn:se:hh:diva-40903OAI: oai:DiVA.org:hh-40903DiVA, id: diva2:1369592
Konferens
International Association of Gerontology and Geriatrics European Region Congress 2019 (IAGG-ER 2019), Gothenburg, Sweden, May 23-25, 2019
Tillgänglig från: 2019-11-12 Skapad: 2019-11-12 Senast uppdaterad: 2019-12-18Bibliografiskt granskad

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Karlsson, Peter

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Karlsson, PeterJohansson, Boo
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Centrum för forskning om välfärd, hälsa och idrott (CVHI)
Gerontologi, medicinsk/hälsovetenskaplig inriktning

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