Document Detail


Between-person and within-person associations among processing speed, attention switching, and working memory in younger and older adults.
MedLine Citation:
PMID:  23421639     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
METHODS: A sample of 108 older adults (M (age) = 80.8, range = 66-95) and 68 younger adults (M (age) = 20.2, range = 18-24) completed measures of processing speed, attention switching, and working memory on six occasions over a 14-day period. Multilevel modeling was used to examine processing speed and attention switching performance as predictors of working memory performance simultaneously across days (within-person) and across individuals (between-person).
RESULTS: The findings indicates that simple comparison and response speed predicted working memory better than attention switching between persons, whereas attention switching predicted working memory better than simple comparison and response speed within persons over time. Furthermore, the authors did not observe strong evidence of age differences in these associations either within or between persons.
CONCLUSION: The findings of the current study suggest that processing speed is important for understanding between-person and age-related differences in working memory, whereas attention switching is more important for understanding within-person variation in working memory. The authors conclude that theories of cognitive aging should be evaluated by analysis of within-person processes, not exclusively age-related individual differences.
Authors:
Robert S Stawski; Martin J Sliwinski; Scott M Hofer
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Experimental aging research     Volume:  39     ISSN:  1096-4657     ISO Abbreviation:  Exp Aging Res     Publication Date:  2013  
Date Detail:
Created Date:  2013-02-20     Completed Date:  2013-08-06     Revised Date:  2014-03-19    
Medline Journal Info:
Nlm Unique ID:  7603335     Medline TA:  Exp Aging Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  194-214     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Aged, 80 and over
Aging / psychology*
Attention*
Cognition
Female
Humans
Individuality
Male
Memory, Short-Term*
Young Adult
Grant Support
ID/Acronym/Agency:
AG12448/AG/NIA NIH HHS; AG26728/AG/NIA NIH HHS; MH018904/MH/NIMH NIH HHS; R01 AG012448/AG/NIA NIH HHS; R01 AG039409/AG/NIA NIH HHS
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