TY - JOUR
T1 - Executive Functioning as a Mediator of the Relationship between Age and Episodic Memory In Healthy Aging
AU - Troyer, Angela K.
AU - Graves, Roger E.
AU - Cullum, C. Munro
N1 - Funding Information:
* The research reported in this paper was conducted in partial fulfillment of the requirements for the Ph.D. degree by the first author at the University of Victoria. This research was supported in part by a grant from the Natural Sciences and Engineering Research Council of Canada to Dr. Graves. Requests for reprints should be sent to Angela Troyer, who is now at the Department of Psychology, Camp Hill Medical Centre, 1763 Robie Street, Halifax, Nova Scotia, B3H 3G2, Canada. Accepted for publication: September 20, 1993.
PY - 1994/3/1
Y1 - 1994/3/1
N2 - The extent to which age-related differences in executive functioning account for age-related differences in recall from episodic memory was examined in a group of healthy older adults. Fifty-one subjects between the ages of 60 and 91 years were given tests of general cognitive abilities, episodic memory, and executive functioning. A mediational model was proposed with executive functioning as the mediator of the relationship between age and delayed recall. Consistent with this model. regression analyses indicated that, when considered alone, age was a significant predictor of recall (p < .001); however, age was not a significant predictor of recall when the effect of executive functioning was partialled out of the equation (p = .37). Furthermore, the unique contribution of executive functioning accounted for 36% of the variance in recall performance. A significant portion of age-related differences in episodic memory recall, therefore, may be due to age-related differences in the executive skills required for optimal performance on such tests.
AB - The extent to which age-related differences in executive functioning account for age-related differences in recall from episodic memory was examined in a group of healthy older adults. Fifty-one subjects between the ages of 60 and 91 years were given tests of general cognitive abilities, episodic memory, and executive functioning. A mediational model was proposed with executive functioning as the mediator of the relationship between age and delayed recall. Consistent with this model. regression analyses indicated that, when considered alone, age was a significant predictor of recall (p < .001); however, age was not a significant predictor of recall when the effect of executive functioning was partialled out of the equation (p = .37). Furthermore, the unique contribution of executive functioning accounted for 36% of the variance in recall performance. A significant portion of age-related differences in episodic memory recall, therefore, may be due to age-related differences in the executive skills required for optimal performance on such tests.
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U2 - 10.1080/09289919408251449
DO - 10.1080/09289919408251449
M3 - Article
AN - SCOPUS:84973040585
SN - 1382-5585
VL - 1
SP - 45
EP - 53
JO - Aging, Neuropsychology, and Cognition
JF - Aging, Neuropsychology, and Cognition
IS - 1
ER -