PMID: 9189994Jun 1, 1997Paper

Predicting episodic memory performance of very old men and women: contributions from age, depression, activity, cognitive ability, and speed

Psychology and Aging
Mary A LuszczP Kent

Abstract

Regression models were developed to explain age-related and total variance in memory and to determine the independent contribution from general processing speed, having taken into account cognitive and noncognitive individual differences. Episodic memory was assessed for 3 tasks in a population-based sample of 951 adults comprising 515 men and 436 women (aged 70-96, M = 77.6, SD = 5.5). Correlations between age and memory accounted for 6%-9% of the variance. Hierarchical multiple regressions showed a reduction in this age-related variance by up to 94%, after entering gender, depression, health, cognitive status, activities, and speed. General processing speed was the major mediator of age-related variance in memory. Although both the age-related variance and the speed-related variance in memory were significantly reduced by prior entry of other individual differences variables for all 3 tasks, speed remained a significant mediator of remembering, and negligible differences in the residual age-related variance were observed by inclusion of other background variables.

Citations

Jun 20, 2003·Journal of Clinical and Experimental Neuropsychology·Nikolaos Scarmeas, Yaakov Stern
Jun 21, 2005·Journal of Epidemiology and Community Health·Lynne C GilesGary R Andrews
Oct 6, 2007·BMC Geriatrics·Lynne C GilesGary R Andrews
Jul 25, 2008·Memory·Katie E CherryS Michal Jazwinski
Feb 7, 2009·The Journals of Gerontology. Series B, Psychological Sciences and Social Sciences·Jessica B S LangbaumMichelle C Carlson
Mar 3, 2010·Journal of the International Neuropsychological Society : JINS·Maheen M AdamsonJoy L Taylor
Apr 27, 2011·Psychology and Aging·Allison A M BielakMary Luszcz
Feb 26, 2013·PloS One·Jason BrandtAllan Anderson

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