Rozas Arturo X Pereiro, Juncos-Rabadán Onésimo, González María Soledad Rodríguez
Department of Developmental and Educational Psychology, University of Almería, Spain.
Int J Aging Hum Dev. 2008;66(2):115-30. doi: 10.2190/AG.66.2.b.
Processing speed, inhibitory control and working memory have been identified as the main possible culprits of age-related cognitive decline. This article describes a study of their interrelationships and dependence on age, including exploration of whether any of them mediates between age and the others. We carried out a LISREL analysis of the performance of 79 participants of low educational level aged 40-91 years in six cognitive tasks. In the best mediational model the effects of age on inhibitory control and working memory are largely mediated by its effect on processing speed. However, in the best-fitting model age has only direct effects on processing speed, working memory, and inhibitory control.
处理速度、抑制控制和工作记忆已被确定为与年龄相关的认知衰退的主要潜在原因。本文描述了一项关于它们之间的相互关系以及对年龄的依赖性的研究，包括探究它们中的任何一个是否在年龄与其他因素之间起中介作用。我们对79名年龄在40至91岁之间、教育水平较低的参与者在六项认知任务中的表现进行了LISREL分析。在最佳中介模型中，年龄对抑制控制和工作记忆的影响在很大程度上是通过其对处理速度的影响来介导的。然而，在最佳拟合模型中，年龄仅对处理速度、工作记忆和抑制控制有直接影响。
