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Generating nonsymbolic number stimuli

机译:产生非符号数刺激

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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.
机译:研究非符号数字(例如点阵列)的研究面临着这样的问题,即数字量的变化总是伴随着刺激的视觉特性的变化。因此,人们争论的是,刺激的视觉属性而不是数字是否可以解释研究非符号数字处理的研究结果。在此报告中,我们提供了一个程序(可从http://titiagebuis.eu/Materials.html获得;请注意,该程序旨在与MATLAB中的Psychophysics Toolbox配合使用),该程序可导出有关刺激的视觉属性的信息,随数量(扩展区域,物品大小,总表面,密度和周长)而变化。因此,可以深入了解刺激物的视觉特性与数值距离之间的关系,并且可以进行事后分析以直接揭示刺激物的数值距离或(某些组合)视觉特性是否最可能结果的潜在候选人。在这里,我们报告的数据证明了该程序对于研究非符号数字刺激的有用性。

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