Department of Psychology, University of Nebraska-Lincoln, 238 Burnett Hall, Lincoln, NE 68516, USA.
Psychol Res. 2011 Jan;75(1):2-9. doi: 10.1007/s00426-010-0283-6. Epub 2010 Apr 10.
Three experiments are reported examining whether the presentation of irrelevant negative numbers at central fixation interacts with attentional orienting beyond fixation. It has been previously shown that number perception influences spatial attention, with the presentation of spatially nonpredictive numbers resulting in the allocation of attention to the left when the number is low (e.g., 1 or 2) and to the right when the number is high (e.g., 8 or 9). In the present experiment, it is examined whether this attentional spatial numerical association of response codes (SNARC) effect is influenced by the presentation of negative numbers, which should have spatial properties that are in direct opposition to their positive counterparts (e.g., -1 or -2 would be considered high numbers relative to -8 or -9, which would be considered low numbers). Though the presentation of negative numbers does not lead to a reversal of the attentional SNARC effect, it does lead to an elimination of the effect, providing insight into how the attentional SNARC effect develops.
报告了三项实验，旨在检验在中央注视点呈现不相关的负数值是否会与注视点之外的注意力定向相互作用。先前的研究表明，数字感知会影响空间注意力，呈现空间上不可预测的数字会导致当数字较低（例如 1 或 2）时，注意力向左分配，而当数字较高（例如 8 或 9）时，注意力向右分配。在本实验中，检验了这种注意力空间数字反应代码关联（SNARC）效应是否受到负数值呈现的影响，负数值的呈现应该具有与其正数值完全相反的空间属性（例如，相对于 -8 或 -9，-1 或 -2 被认为是较高的数字，而 -8 或 -9 则被认为是较低的数字）。虽然负数值的呈现并没有导致注意力 SNARC 效应的反转，但它确实导致了效应的消除，这为我们提供了深入了解注意力 SNARC 效应是如何发展的。
