Less precise representation of numerical magnitude in high math-anxious individuals: An ERP study of the size and distance effects
Less precise representation of numerical magnitude in high math-anxious individuals: An ERP study of the size and distance effects
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DOI：
10.1016/j.biopsycho.2014.09.004
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发表时间：
2014-12-01
影响因子：
2.6
通讯作者：
Suarez-Pellicioni, Macarena
中科院分区：
文献类型：
--
作者：
Isabel Nunez-Pena, M.;Suarez-Pellicioni, Macarena
数值比较任务被广泛用于研究数值大小的心理表征。在研究中，记录事件相关脑电位（ERP），同时26名高数学焦虑（HMA）和27名低数学焦虑（LMA）的个体被呈现成对的阿拉伯数字，并被要求决定哪一个具有较大的数字幅度。数字的大小和它们之间的距离被操纵，以研究大小和距离效应。结果表明，HMA组的距离和尺寸效应均较大。在ERP方面，HMA组的ERP距离效应在大小效应和距离效应方面均比LMA组大。由于这一成分被认为是数字大小加工的标志，因此这一结果表明HMA个体对数字大小的表达不太精确。(C)2014爱思唯尔有限公司版权所有。
Numerical comparison tasks are widely used to study the mental representation of numerical magnitude. In study, event-related brain potentials (ERPs) were recorded while 26 high math-anxious (HMA) and 27 low math-anxious (LMA) individuals were presented with pairs of single-digit Arabic numbers and were asked to decide which one had the larger numerical magnitude. The size of the numbers and the distance between them were manipulated in order to study the size and the distance effects. The results showed that both distance and size effects were larger for the HMA group. As for ERPs, results showed that the ERP distance effect had larger amplitude for both the size and distance effects in the HMA group than among their LMA counterparts. Since this component has been taken as a marker of the processing of numerical magnitude, this result suggests that HMA individuals have a less precise representation of numerical magnitude. (C) 2014 Elsevier B.V. All rights reserved.