Costello Matthew C, Madden David J, Shepler Anne M, Mitroff Stephen R, Leber Andrew B
Duke University Medical Center, Durham, North Carolina, USA.
Exp Aging Res. 2010 Jul;36(3):249-72. doi: 10.1080/0361073X.2010.484719.
Visual search studies have demonstrated that older adults can have preserved or even increased top-down control over distraction. However, the results are mixed as to the extent of this age-related preservation. The present experiment assesses group differences in younger and older adults during visual search, with a task featuring two conditions offering varying degrees of top-down control over distraction. After controlling for generalized slowing, the analyses revealed that the age groups were equally capable of utilizing top-down control to minimize distraction. Furthermore, for both age groups, the distraction effect was manifested in a sustained manner across the reaction time distribution.
视觉搜索研究表明,老年人对分心干扰的自上而下控制能力可以保持甚至增强。然而,关于这种与年龄相关的保持程度,研究结果并不一致。本实验评估了年轻人和老年人在视觉搜索过程中的组间差异,该任务有两种条件,对分心干扰提供不同程度的自上而下控制。在控制了普遍的反应迟缓因素后,分析结果显示,两个年龄组在利用自上而下控制来尽量减少分心干扰方面能力相当。此外,对于两个年龄组来说,分心干扰效应在整个反应时间分布中持续存在。