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Childhood social cl...
Childhood social class and cognitive aging in the Swedish Adoption/Twin Study of Aging
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- Ericsson, Malin (author)
- Karolinska Institutet
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- Lundholm, Cecilia (author)
- Karolinska Institutet
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- Fors, Stefan (author)
- Stockholms universitet,Karolinska Institutet,Centrum för forskning om äldre och åldrande (ARC), (tills m KI)
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- Dahl Aslan, Anna K., 1975- (author)
- Karolinska Institutet,Jönköping University,HHJ, Institutet för gerontologi,HHJ. ARN-J (Aging Research Network - Jönköping),Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden ; Institute for Gerontology, School of Health and Welfare, Jönköping University, Sweden
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- Zavala, Catalina (author)
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden ; Department of Psychology, University of Southern California, Los Angeles, United States
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- Reynolds, Chandra A. (author)
- Department of Psychology, University of California, Riverside, United States
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- Pedersen, Nancy L. (author)
- Karolinska Institutet
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(creator_code:org_t)
- 2017-06-19
- 2017
- English.
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In: Proceedings of the National Academy of Sciences of the United States of America. - : National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 114:27, s. 7001-7006
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Abstract
Subject headings
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- In this report we analyzed genetically informative data to investigate within-person change and between-person differences in late-life cognitive abilities as a function of childhood social class. We used data from nine testing occasions spanning 28 y in the Swedish Adoption/Twin Study of Aging and parental social class based on the Swedish socioeconomic index. Cognitive ability included a general factor and the four domains of verbal, fluid, memory, and perceptual speed. Latent growth curve models of the longitudinal data tested whether level and change in cognitive performance differed as a function of childhood social class. Between-within twin-pair analyses were performed on twins reared apart to assess familial confounding. Childhood social class was significantly associated with mean-level cognitive performance at age 65 y, but not with rate of cognitive change. The association decreased in magnitude but remained significant after adjustments for level of education and the degree to which the rearing family was supportive toward education. A between-pair effect of childhood social class was significant in all cognitive domains, whereas within-pair estimates were attenuated, indicating genetic confounding. Thus, childhood social class is important for cognitive performance in adulthood on a population level, but the association is largely attributable to genetic influences.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Annan medicin och hälsovetenskap -- Gerontologi, medicinsk/hälsovetenskaplig inriktning (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Other Medical and Health Sciences -- Gerontology, specialising in Medical and Health Sciences (hsv//eng)
- SAMHÄLLSVETENSKAP -- Psykologi -- Psykologi (hsv//swe)
- SOCIAL SCIENCES -- Psychology -- Psychology (hsv//eng)
- SAMHÄLLSVETENSKAP -- Psykologi -- Tillämpad psykologi (hsv//swe)
- SOCIAL SCIENCES -- Psychology -- Applied Psychology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Geriatrik (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Geriatrics (hsv//eng)
- SAMHÄLLSVETENSKAP -- Sociologi -- Socialpsykologi (hsv//swe)
- SOCIAL SCIENCES -- Sociology -- Social Psychology (hsv//eng)
- NATURVETENSKAP -- Annan naturvetenskap (hsv//swe)
- NATURAL SCIENCES -- Other Natural Sciences (hsv//eng)
Keyword
- childhood social class
- cognitive aging
- adoption
- twins
Publication and Content Type
- ref (subject category)
- art (subject category)
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