Weeks D J, Proctor R W, Beyak B
Human Factors Lab, School of Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada.
Q J Exp Psychol A. 1995 May;48(2):367-83. doi: 10.1080/14640749508401395.
It has previously been shown that, when stimuli positioned above or below a central fixation point ("up" and "down" stimuli) are assigned to left and right responses, the stimulus-response mapping up-left/down-right is more compatible than the mapping up-right/down-left for responses executed by the left hand in the left hemispace, but this relation is reversed for responses executed by the right hand in the right hemispace. In Experiment 1, each hand responded at locations in both hemispaces to dissociate the influence of hand identity from response location, and response location was found to be the determinant of relative compatibility. In Experiment 2 responses were made at the sagittal midline, and an inactive response switch was placed to the left or right to induce coding of the active switch as right or left, respectively. This manipulation of relative location had an effect similar to, although of lesser magnitude than, that produced by physically changing location of the response switch in Experiment 1. It is argued that these results are counter to predictions of a movement-preference account and consistent with the view that spatial coding underlies compatibility effects for orthogonally oriented stimulus and response sets.
先前的研究表明，当位于中央注视点上方或下方的刺激（“上”和“下”刺激）被分配到左和右反应时，对于左手在左半空间执行的反应，刺激-反应映射“上-左/下-右”比“上-右/下-左”更兼容，但对于右手在右半空间执行的反应，这种关系则相反。在实验1中，每只手在两个半空间的位置做出反应，以区分手的身份与反应位置的影响，结果发现反应位置是相对兼容性的决定因素。在实验2中，反应在矢状中线进行，并且将一个非活动的反应开关放置在左侧或右侧，以分别诱导将活动开关编码为右侧或左侧。这种相对位置的操纵产生了与实验1中通过实际改变反应开关位置所产生的效果相似的效果，尽管程度较小。有人认为，这些结果与运动偏好理论的预测相反，并且与空间编码是正交定向的刺激和反应集的兼容性效应的基础这一观点一致。
