General and Specific Speed Mediation of Adult Age Differences in Memory
نویسندگان
چکیده
منابع مشابه
General and specific speed mediation of adult age differences in memory.
The proposal that age-related differences in some measures of speed of performance may not be independent of the age-related differences in other measures of speed of performance has been associated with considerable controversy. Because converging evidence can often resolve this type of controversy, correlation-based procedures are proposed to distinguish general (or common) and specific (or u...
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age R2 for age when it was considered alone was .158, but the value was reduced to only.035 after the variation in a composite measure of perceptual speed was controlled. These results therefore suggest that almost 807o (i.e., [. I 58 .035 ]l I 58 = .778) ofthe age-related variance in certain measures offluid cognition is associated with variations in perceptual speed. The research reported in ...
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T/rree studies, involving a total of672 adults between 20 and 84 years of age, were conducted to evaluate the relative importance of working memory and perceptual comparison speed in the age-related dffirences in selected measures of cognitive functioning. The same measures of working memory and comparison speed were used in each study, but the studies dffired in the specific cognitive measures...
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Three research methods were used to investigate the hypothesized mediational influence of working memory on age-related differences in integrative reasoning. Results from all three procedures were consistent with the hypothesis because (1) statistical control of an index of working memory attenuated the age differences in reasoning accuracy, (2) young adults were more accurate than older adults...
متن کاملProcessing speed and adult age differences in activity memory.
Immediate and delayed recall of performed cognitive activities was examined in 136 adults aged 20 to 85. Hierarchical regression analyses were used to assess the association between perceptual speed and age differences in activity memory. The age-related variance in delayed activity recall was reduced by 52% by the statistical control of perceptual speed, and the age-related variance in immedia...
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ژورنال
عنوان ژورنال: The Journals of Gerontology Series B: Psychological Sciences and Social Sciences
سال: 1996
ISSN: 1079-5014,1758-5368
DOI: 10.1093/geronb/51b.1.p30