Norman J Farley, Payton Sharon M, Long Jennifer R, Hawkes Laura M
Department of Psychology, Western Kentucky University, Bowling Green, KY 42101, USA.
Psychol Aging. 2004 Mar;19(1):219-25. doi: 10.1037/0882-7974.19.1.219.
Two experiments examined how observers' ability to perceive biological motion changes with increasing age. The observers discriminated among kinetic figures, depicting walking, jogging, and skipping. The direction, duration, and temporal correspondence of the motions were manipulated. Quantitative differences occurred between the recognition performances of younger and older observers, but these differences were often modest. The older and younger observers' performances were comparable for most conditions at stimulus durations of 400 ms. The older observers also performed well above chance at shorter durations of 240 and 120 ms. Unlike their performance on other 2- or 3-dimensional motion tasks, older observers' ability to perceive biological motion is relatively well preserved.
两项实验研究了观察者感知生物运动的能力如何随年龄增长而变化。观察者对描绘行走、慢跑和跳跃的动态图形进行辨别。对运动的方向、持续时间和时间对应关系进行了操控。年轻和年长观察者的识别表现存在定量差异，但这些差异通常较小。在刺激持续时间为400毫秒时，大多数条件下年长和年轻观察者的表现相当。在240毫秒和120毫秒的较短持续时间下，年长观察者的表现也远高于随机水平。与他们在其他二维或三维运动任务中的表现不同，年长观察者感知生物运动的能力相对保留得较好。
