Vishton Peter M, Stephens Nicolette J, Nelson Lauren A, Morra Sarah E, Brunick Kaitlin L, Stevens Jennifer A
Psychology Department, College of William & Mary, Williamsburg, VA 23187-8795, USA.
Psychol Sci. 2007 Aug;18(8):713-9. doi: 10.1111/j.1467-9280.2007.01965.x.
Three experiments assessed the influence of the Ebbinghaus illusion on size judgments that preceded verbal, grasp, or touch responses. Prior studies have found reduced effects of the illusion for the grip-scaling component of grasping, and these findings are commonly interpreted as evidence that different visual systems are employed for perceptual judgment and visually guided action. In the current experiments, the magnitude of the illusion was reduced by comparable amounts for grasping and for judgments that preceded grasping (Experiment 1). A similar effect was obtained prior to reaching to touch the targets (Experiment 2). The effect on verbal responses was apparent even when participants were simply instructed that a target touch task would follow the verbal task. After participants had completed a grasping task, the reduction in the magnitude of the illusion remained for a subsequent verbal-response judgment task (Experiment 3). Overall, the studies demonstrate strong connections between action planning and perception.
三项实验评估了艾宾浩斯错觉对言语、抓握或触摸反应之前的大小判断的影响。先前的研究发现，错觉对抓握的抓握缩放成分的影响有所减弱，这些发现通常被解释为不同视觉系统用于感知判断和视觉引导动作的证据。在当前实验中，抓握以及抓握之前的判断的错觉大小都有相当程度的减小（实验1）。在伸手触摸目标之前也获得了类似的效果（实验2）。即使只是简单地告知参与者在言语任务之后会有一个目标触摸任务，错觉对言语反应的影响依然明显。在参与者完成抓握任务后，错觉大小的减小在随后的言语反应判断任务中依然存在（实验3）。总体而言，这些研究证明了动作规划与感知之间存在紧密联系。
