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 unique) age-related influences on measures of speeded performance. Results from three earlier studies and from a new study suggest that a large proportion of the age-related variance in a wide range of speed measures is shared and is not distinct. Furthermore, the common or general speed factor appears to play an important role in the mediation of age-related differences in memory.
Salthouse
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TA
School of Psychology, Georgia Institute of Technology, USA.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D000704:Analysis of Variance; D005260:Female; D006801:Humans; D008297:Male; D008570:Memory, Short-Term / Q000502:physiology*; D008606:Mental Processes / Q000502:physiology*; D011939:Mental Recall / Q000502:physiology*; D008875:Middle Aged; D012044:Regression Analysis; D013997:Time Factors