کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5042179 1474257 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Predictors of ageing-related decline across multiple cognitive functions
ترجمه فارسی عنوان
پیش بینی عوامل مرتبط با پیری در عملکرد های مختلف شناختی
کلمات کلیدی
موضوعات مرتبط
علوم انسانی و اجتماعی روانشناسی روانشناسی تجربی و شناختی
چکیده انگلیسی
It is critical to discover why some people's cognitive abilities age better than others'. We applied multivariate growth curve models to data from a narrow-age cohort measured on a multi-domain IQ measure at age 11 years and a comprehensive battery of thirteen measures of visuospatial, memory, crystallized, and processing speed abilities at ages 70, 73, and 76 years (n = 1091 at age 70). We found that 48% of the variance in change in performance on the thirteen cognitive measures was shared across all measures, an additional 26% was specific to the four ability domains, and 26% was test-specific. We tested the association of a wide variety of sociodemographic, fitness, health, and genetic variables with each of these cognitive change factors. Models that simultaneously included all covariates accounted for appreciable proportions of variance in the cognitive change factors (e.g. approximately one third of the variance in general cognitive change). However, beyond physical fitness and possession of the APOE e4 allele, very few predictors were incrementally associated with cognitive change at statistically significant levels. The results highlight a small number of factors that predict differences in cognitive ageing, and underscore that correlates of cognitive level are not necessarily predictors of decline. Even larger samples will likely be required to identify additional variables with more modest associations with normal-range heterogeneity in aging-related cognitive declines.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intelligence - Volume 59, November–December 2016, Pages 115-126
نویسندگان
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