Luh K E, Redl J, Levy J
Department of Psychology, University of Wisconsin, Madison 53706.
Brain Cogn. 1994 Jul;25(2):141-60. doi: 10.1006/brcg.1994.1028.
We examined perceptual biases of 72 left-handers on six free-vision chimeric tasks, four entailing judgments of emotion (EP and EC tasks) or femininity (GP and GC tasks) in photographic and cartoon chimeric faces, and two of visuospatial properties in dot-filled rectangles (DN-dots nonface task) and asymmetrical shapes (SN-shapes nonface task), and compared to them to those of 72 right-handers previously described by Luh, Rueckert, and Levy (1991). Neither handedness group had an asymmetric bias on the SN task. Both had left hemispatial biases on all other tasks, which were equal across tasks for left-handers, larger on the EP and EC than other tasks for right-handers, and larger for right- than left-handers only on the EP and EC tasks. Task-specific reliable variance was decreased and variance common to all tasks was increased for left- compared to right-handers, which suggests less differentiation of processes in left- than right-handers.
我们在六项自由视觉嵌合体任务中研究了72名左撇子的感知偏差，其中四项任务涉及对照片和卡通嵌合体面孔中的情绪（EP和EC任务）或女性气质（GP和GC任务）进行判断，另外两项任务分别是对填充点的矩形（DN - 点非面部任务）和不对称形状（SN - 形状非面部任务）的视觉空间属性进行判断，并将他们的结果与Luh、Rueckert和Levy（1991年）之前描述的72名右撇子的结果进行比较。在SN任务中，两个用手习惯组都没有不对称偏差。在所有其他任务中，两个组都有左半空间偏差，对于左撇子来说，这些偏差在各任务中是相等的；对于右撇子来说，在EP和EC任务上的偏差比其他任务更大，并且仅在EP和EC任务上，右撇子的偏差比左撇子更大。与右撇子相比，左撇子特定任务的可靠方差降低，所有任务共有的方差增加，这表明左撇子的心理过程分化程度低于右撇子。
