How Many Causes Are There of Aging-Related Decrements in Cognitive Functioning?
How Many Causes Are There of Aging-Related Decrements in Cognitive Functioning?
复制标题
与衰老相关的认知功能下降有多少原因？
DOI：
--
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
T. Salthouse
中科院分区：
文献类型：
--
作者：
T. Salthouse
摘要本文提出了两种分析方法来评价一组变量中与年龄有关的影响在多大程度上是相互独立的。16个不同的数据集，共代表169个变量和4505名受试者的方法的应用表明，少至一个或两个不同的因素可能足以占很大比例的年龄相关的各种认知变量的方差。因此，这些结果意味着，一个相对较少的独立的“原因”可能是负责相当大比例的年龄相关的下降明显在许多措施的认知功能。
Abstract Two analytical methods are proposed to evaluate the extent to which the age-related influences in a set of variables are independent of one another. Application of the methods to 16 different data sets, representing a total of 169 variables and 4505 subjects, reveals that as few as one or two distinct factors may be sufficient to account for a large proportion of the age-related variance in a variety of cognitive variables. These results therefore imply that a relatively small number of independent "causes" may be responsible for a substantial percentage of the age-related declines apparent in many measures of cognitive functioning.