Department of Social Psychology and Quantitative Psychology (Quantitative Psychology Section), Faculty of Psychology, University of Barcelona, Spain; Institute of Neurosciences, University of Barcelona, Spain; Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain.
Institute of Neurosciences, University of Barcelona, Spain; Department of Cognition, Development and Educational Psychology (Cognitive Processes Section), Faculty of Psychology, University of Barcelona, Spain.
Biol Psychol. 2021 Apr;161:108062. doi: 10.1016/j.biopsycho.2021.108062. Epub 2021 Mar 2.
The Spatial-Numerical Association of Response Codes (SNARC) effect was examined in highly (HMA) and low math-anxious (LMA) individuals performing a number comparison in an ERP study. The SNARC effect consists of faster latencies when the response side is congruent with number location in the mental number line (MNL). Despite the stronger SNARC effect in the HMA group, their responses in incongruent trials were slower than in congruent trials only for the largest numerical magnitudes. Moreover, HMAs showed a less positive centroparietal P3b component in incongruent trials than in congruent ones, but only for the largest magnitudes. Since the SNARC effect arises during response selection and P3b positivity decreases with the difficulty of decision, this result suggests that HMA individuals might find it more difficult than LMAs to control the conflict between the automatically activated location of numbers in the MNL and the response side, especially in more cognitively demanding trials.
在一项 ERP 研究中，高数学焦虑（HMA）和低数学焦虑（LMA）个体进行数字比较时，考察了反应代码的空间-数字关联（SNARC）效应。SNARC 效应是指当反应侧与心理数字线（MNL）中的数字位置一致时，反应时更快。尽管 HMA 组的 SNARC 效应更强，但仅在最大数值的不一致试验中，他们的反应比一致试验慢。此外，HMA 在不一致试验中比在一致试验中表现出更小的中央顶叶 P3b 成分，但仅在最大数值时如此。由于 SNARC 效应在反应选择过程中产生，并且 P3b 阳性度随决策难度的增加而降低，因此该结果表明，与 LMA 相比，HMA 个体可能更难控制 MNL 中自动激活的数字位置与反应侧之间的冲突，尤其是在认知要求更高的试验中。
