Generating nonsymbolic number stimuli
Generating nonsymbolic number stimuli
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DOI：
10.3758/s13428-011-0097-5
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发表时间：
2011-12-01
影响因子：
5.4
通讯作者：
Reynvoet, Bert
中科院分区：
文献类型：
--
作者：
Gebuis, Titia;Reynvoet, Bert
研究非符号数字（例如，点阵列）面临的问题是，数量的变化总是伴随着刺激的视觉特性的变化。因此，它是有争议的视觉特性的刺激，而不是数字可以解释所获得的研究结果调查非符号数字处理。在这份报告中，我们提出了一个程序（可在http：//titiagebuis.eu/Materials.html上获得;请注意，该程序旨在与MATLAB中的心理物理学工具箱一起工作），该程序可以导出有关刺激的视觉属性的信息，这些信息随数量（扩展的面积，项目大小，总表面，密度和周长）而变化。因此，可以实现对刺激的视觉特性与数值距离之间的关系的洞察，并且可以进行事后分析以直接揭示刺激的数值距离或视觉特性（的一些组合）是否可能是结果的最可能候选者。在这里，我们报告的数据表明，该计划的有用性的非符号数字刺激的研究。
Studies investigating nonsymbolic numbers (e.g., dot arrays) are confronted with the problem that changes in numerosity are always accompanied by changes in the visual properties of the stimulus. It is therefore debated whether the visual properties of the stimulus rather than number can explain the results obtained in studies investigating nonsymbolic number processing. In this report, we present a program (available at http://titiagebuis.eu/Materials.html; note that the program is designed to work with the Psychophysics Toolbox in MATLAB) that exports information about the visual properties of stimuli that co-vary with number (area extended, item size, total surface, density, and circumference). Consequently, insight into the relation between the visual properties of the stimulus and numerical distance can be achieved, and post hoc analyses can be conducted to directly reveal whether numerical distance or (some combinations of) the visual properties of a stimulus could be the most likely candidate underlying the results. Here, we report data that demonstrate the program's usefulness for research on nonsymbolic number stimuli.