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Children and monkeys overestimate the size of high-contrast stimuli
Attention, Perception, & Psychophysics ( IF 1.7 ) Pub Date : 2021-03-16 , DOI: 10.3758/s13414-021-02272-7
Audrey E Parrish 1 , Michael J Beran 2
Affiliation  

The letter height superiority effect reveals that human adults judge letters to be taller than identically sized pseudoletters. This effect extends to words, such that words are estimated to be greater in size or lasting longer in duration than pseudowords of the same size or those presented for the same duration. The physical properties of letters and words also impact their perceived size, such that higher contrast between figure–ground stimuli leads to greater size estimates. Specifically, black letters on a white background (high contrast between figure and ground) are judged to be taller than gray letters and gray pseudoletters on a white background (low contrast between figure and ground) for adult humans. In the current study, we assessed whether this effect would extend to nonverbal stimuli (shapes) such that high-contrast shapes would lead to greater size estimates relative to low-contrast shapes for human children and rhesus monkeys in a two-choice discrimination task. We found that children and monkeys tended to overestimate the size of high-contrast shapes relative to low-contrast shapes consistent with results reported among human adults. Implications for perceptual fluency and its impact on subjective size estimates are discussed.



中文翻译:

儿童和猴子高估了高对比度刺激的大小

字母高度优势效应表明,成年人认为字母要比相同大小的伪字母高。该效果扩展到单词,从而与相同大小的伪单词或相同持续时间的伪单词相比,估计单词的大小更大或持续时间更长。字母和单词的物理特性也会影响其感知的大小,因此,图形-地面刺激之间的更高对比度会导致更大的大小估计。具体而言,对于成年人来说,白色背景上的黑色字母(图与地面之间的高对比度)被认为比白色背景上的灰色字母和灰色伪字母(图与地面之间的低对比度)高。在目前的研究中 我们评估了这种效果是否会扩展到非语言刺激(形状),从而在两项选择任务中,高对比度形状会导致人类儿童和恒河猴相对于低对比度形状产生更大的尺寸估计。我们发现,儿童和猴子倾向于高估相对于低对比度形状的高对比度形状的大小,这与在成人中报道的结果一致。讨论了对感知流利性的影响及其对主观大小估计的影响。

更新日期:2021-03-17
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