Department of Psychology, University of Virginia, P.O. Box 400400, Charlottesville, VA, 22904-4400, USA.
J Exp Psychol Hum Percept Perform. 2009 Dec;35(6):1649-60. doi: 10.1037/a0016875.
Previous research has suggested that perceived distances are scaled by the action capabilities of the body. The present studies showed that when "reachability" is constrained due to a difficult grasp required to pick up an object, perceived distance to the object increases. Participants estimated the distances to tools with handle orientations that made them either easy or difficult to grasp with their dominant and nondominant hands. Right-handed participants perceived tools that were more difficult to grasp to be farther away than tools that were easier to grasp. However, perceived distance did not differ in left-handed participants. These studies suggest that, when reaching toward a target, the distance to that target is scaled in terms of how far one can effectively reach, given the type of reaching posture that is executed. Furthermore, this effect is modulated by handedness.
先前的研究表明，人们对距离的感知是根据身体的活动能力来调整的。本研究表明，当由于捡起物体所需的困难抓握而限制“可及性”时，对物体的感知距离会增加。参与者估计了具有手柄方向的工具的距离，这些手柄方向使得他们用惯用手和非惯用手抓握变得容易或困难。右利手参与者认为难以抓握的工具比容易抓握的工具距离更远。然而，左利手参与者的感知距离没有差异。这些研究表明，在向目标伸出手时，根据所执行的伸手姿势的类型，目标的距离会根据能够有效到达的距离进行调整。此外，这种效果受利手的影响。
