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Contribution of a common ability in average and variability judgments
Psychonomic Bulletin & Review ( IF 4.412 ) Pub Date : 2021-07-19 , DOI: 10.3758/s13423-021-01982-1
Oakyoon Cha 1, 2 , Randolph Blake 1 , Isabel Gauthier 1
Affiliation  

People can make judgments about statistical properties of visual features within groups of objects, such as the average size, size variability, or numerosity of circles. Emerging from recent work is the view that these kinds of visual estimations, collectively dubbed ensemble perception, rely on independent abilities that are specific to the statistical property being estimated (mean, variance, range, numerosity). Here we revisit evidence for the claim that different statistical judgments (i.e., average and variability) for the same object feature are based on independent abilities. We tested a large sample of people, using a pre-registered open-ended sequential design to avoid ending up with weak evidence. We estimated the shared variance in ability across different ensemble judgments, with common constraints for the different tasks. We found that the abilities to judge the average size and the size variability for an array of circles are positively correlated, even after controlling for the ability to discriminate the size of single circles. Our results refute the idea that judgments of average and variability for the same object feature rely on completely independent abilities.



中文翻译:

在平均和可变性判断中的共同能力的贡献

人们可以对一组对象内的视觉特征的统计特性做出判断,例如平均大小、大小可变性或圆圈的数量。从最近的工作中出现的观点是,这些视觉估计,统称为整体感知,依赖于特定于被估计的统计属性(均值、方差、范围、数量)的独立能力。在这里,我们重新审视关于同一对象特征的不同统计判断(即平均和可变性)基于独立能力的说法的证据。我们使用预先注册的开放式顺序设计对大量人员进行了测试,以避免以弱证据告终。我们估计了不同集成判断的能力共享方差,并具有针对不同任务的共同约束。我们发现,即使在控制了区分单个圆圈大小的能力之后,判断一组圆圈的平均大小和大小可变性的能力也呈正相关。我们的结果驳斥了对同一对象特征的平均和可变性的判断依赖于完全独立的能力的观点。

更新日期:2021-07-20
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