Fischer M H
Department of Psychology, University of Massachusetts, Amherst 01003.
Brain Cogn. 1994 May;25(1):24-33. doi: 10.1006/brcg.1994.1020.
Two experiments tested whether bias in cued line bisection resulted from perceptual grouping or attentional factors. Before trying to bisect a line, subjects had to report two lateralized letters. These cues were either equally spaced (Experiment 1) or asymmetrically spaced (Experiment 2) with respect to the line. No effect of order of cue-report on performance was found, arguing against the role of attentional factors. Bisection was systematically biased toward the closer-spaced cue. These findings in normal subjects suggest that cuing effects are due to perceptual rather than attentional factors.
两项实验测试了线索化直线二等分中的偏差是由知觉分组还是注意因素导致的。在尝试二等分一条直线之前，受试者必须报告两个位于一侧的字母。这些线索相对于直线要么等距分布（实验1），要么非对称分布（实验2）。未发现线索报告顺序对表现有影响，这反驳了注意因素的作用。二等分系统性地偏向间距更近的线索。正常受试者的这些发现表明，线索化效应是由知觉因素而非注意因素导致的。
