Shared age-related influences on cognitive and noncognitive variables.
Analyses of new data and of previously published data were conducted to examine the degree to which age-related variance was shared across cognitive and noncognitive variables and to investigate possible alterations in the composition of a factor common to all variables as a function of age. The results indicated that measures of visual acuity, grip strength, and blood pressure shared age-related variance with measures of perceptual speed, episodic memory, spatial visualization, and inductive reasoning. However, although the cognitive variables shared similar amounts of variance in age-restricted and age-partialed analyses, the variance shared between cognitive and noncognitive variables was substantially reduced after controlling the influence of age.
Salthouse
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School of Psychology, Georgia Institute of Technology, Atlanta 30332-0170, USA. tim.salthouse@psych.gatech.edu
Hambrick
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McGuthry
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D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology; D003071:Cognition / Q000502:physiology*; D005260:Female; D015577:Geriatric Assessment; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D008297:Male; D011939:Mental Recall / Q000502:physiology; D008875:Middle Aged; D009483:Neuropsychological Tests; D009949:Orientation / Q000502:physiology; D010364:Pattern Recognition, Visual / Q000502:physiology; D011340:Problem Solving / Q000502:physiology; D011601:Psychophysics; D011603:Psychophysiology; D011930:Reaction Time / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology