Department of Psychological Sciences, Ogden College of Science and Engineering, Western Kentucky University, 1906 College Heights Blvd. #22030, Bowling Green, KY, 42101-2030, USA.
Center for Applied Science in Health and Aging, Western Kentucky University, Bowling Green, KY, 42101-2030, USA.
Sci Rep. 2022 Oct 13;12(1):17148. doi: 10.1038/s41598-022-22141-z.
An experiment evaluated the ability of 30 younger and older adults to visually judge object size under three conditions: (1) full cue, (2) in the dark, with linear perspective, and (3) in complete darkness. Each observer made repeated judgments for the same square stimuli (the task was to adjust a separation until it matched the perceived size of the squares), enabling an evaluation of precision as well as accuracy. The judgments were just as accurate in the dark with linear perspective condition as in the full cue condition, indicating that linear perspective serves as an important source of optical information to support the perception of object size). In contrast, in complete darkness (where linear perspective information was unavailable), the accuracy of the observers' judgments was poor. Finally, there was no difference in either the accuracy or the precision of the observers' judgments between the two age groups, despite the fact that the older adults were more than 50 years older than the younger adults (mean age of the younger and older adults was 22.3 and 74.1 years, respectively). The ability to visually perceive object size is well maintained with increasing age, unlike a number of other important visual abilities.
一项实验评估了 30 名年轻和年长成年人在三种条件下的视觉判断物体大小的能力：（1）完全提示，（2）黑暗中，具有线性透视，（3）完全黑暗。每个观察者对相同的正方形刺激进行了多次判断（任务是调整分隔以使其与正方形的感知大小匹配），从而可以评估精度和准确性。在黑暗中具有线性透视条件下的判断与在完全提示条件下一样准确，这表明线性透视是支持物体大小感知的重要光学信息源。相比之下，在完全黑暗的情况下（线性透视信息不可用），观察者判断的准确性很差。最后，尽管老年组比年轻组年长 50 多岁（年轻组和老年组的平均年龄分别为 22.3 和 74.1 岁），但两组观察者判断的准确性或精度都没有差异。与许多其他重要的视觉能力不同，视觉感知物体大小的能力随着年龄的增长而得到很好的保持。
