Marzola Gianluca, Cohen Dale J
Department of Philosophy and Communication, University of Bologna.
Department of Psychology, University of North Carolina at Wilmington.
J Exp Psychol Hum Percept Perform. 2023 Apr;49(4):465-482. doi: 10.1037/xhp0001090. Epub 2023 Mar 20.
The Spatial-Numerical Association of Response Code (SNARC) effect refers to the finding that people respond to small numbers faster with the left hand and to large numbers faster with the right hand. This effect is often explained by hypothesizing that the mental representation of quantities has a spatial component: left to right in ascending order (Mental Number Line). Here we assess the relation between quantity and spatial representation by investigating mirror numbers. Although mirror numbers denote quantity, they are not generally encountered in a left-to-right spatial organization. In Experiments 1 and 2, we assessed whether numerical distance and SNARC effects were present for both mirror and normal numbers when participants were required to process semantic information in a magnitude classification task. In Experiment 3, we assessed whether the SNARC effect was present for both mirror and normal numbers when participants were not required to process semantic information in a mirror judgment task. Results show that participants access the quantity of both normal and mirror numbers, but only normal numbers are spatially organized from left to right. In addition, we show that the physical similarity between numbers successfully predicted the performance of participants. We concluded that the Working Memory account of the SNARC effect best explains our data. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
反应编码的空间数字关联（SNARC）效应是指这样一个发现：人们用左手对小数的反应更快，用右手对大数的反应更快。这种效应通常通过假设数量的心理表征具有空间成分来解释：按升序从左到右（心理数字线）。在这里，我们通过研究镜像数字来评估数量与空间表征之间的关系。虽然镜像数字表示数量，但它们在从左到右的空间组织中并不常见。在实验1和实验2中，当要求参与者在大小分类任务中处理语义信息时，我们评估了镜像数字和普通数字是否存在数字距离和SNARC效应。在实验3中，当要求参与者在镜像判断任务中不处理语义信息时，我们评估了镜像数字和普通数字是否存在SNARC效应。结果表明，参与者能够获取普通数字和镜像数字的数量，但只有普通数字是从左到右进行空间组织的。此外，我们表明数字之间的物理相似性成功地预测了参与者的表现。我们得出结论，SNARC效应的工作记忆解释最能解释我们的数据。（PsycInfo数据库记录（c）2023美国心理学会，保留所有权利）
