Consistency of perceptual response variability in size estimation and reproduction tasks.

IF 4.6 2区 心理学 Q1 PSYCHOLOGY, EXPERIMENTAL
Kenny Yu, Tzu-Yao Lin, Jonas Zaman, Francis Tuerlinckx, Niels Vanhasbroeck
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Abstract

Measuring perceptual uncertainty is important for understanding how perception influences post-perception behavior, while it remains unknown whether measured perceptual responses in behavioral tasks reflect true perceptual uncertainty or methodological artifacts. This study compared two size perception approaches: a visual analog scale (VAS) estimation task and a reproduction task. We recruited 180 participants who completed both tasks by estimating circle diameters on a VAS and adjusting circle sizes to match specified diameters. Our analysis used two Bayesian multilevel models - a variance decomposition model computing intraclass correlation coefficients (ICCs) for overall response consistency, and a generative psychophysical model to characterize perceptual response patterns. Results revealed high overall response consistency across tasks, but detailed variance component analysis uncovered systematic method differences. Participant, stimulus, and interaction variances were consistently higher in the estimation task, indicating greater individual differences and more idiosyncratic responses. Psychophysical analyses further showed that the estimation task produced a steeper perceptual slope and a lower intercept compared to reproduction. Notably, while overall task-level perceptual uncertainty was nearly identical, the scaling of uncertainty with stimulus size was markedly stronger in estimation. These findings suggest that much of the observed variability reflects genuine perceptual uncertainty rather than measurement error, though distinct cognitive demands shape its expression. Our results confirm that both VAS and reproduction tasks yield consistent measures of perceptual variability, underscoring their value in behavioral research and the need for future studies to disentangle intrinsic perceptual processes from task-specific noise.

大小估计和再现任务中知觉反应变异性的一致性。
测量感知不确定性对于理解感知如何影响感知后行为非常重要,而在行为任务中测量的感知反应是否反映了真正的感知不确定性或方法上的人为因素仍然未知。本研究比较了两种尺寸感知方法:视觉模拟量表(VAS)估计任务和再现任务。我们招募了180名参与者,他们通过在VAS上估计圆的直径并调整圆的大小以匹配指定的直径来完成这两项任务。我们的分析使用了两个贝叶斯多层模型——一个是计算类内相关系数(ICCs)的方差分解模型,用于总体反应一致性,另一个是生成心理物理模型,用于表征感知反应模式。结果显示,不同任务的总体反应一致性较高,但详细的方差成分分析揭示了系统方法的差异。参与者、刺激和相互作用的差异在估计任务中始终较高,表明更大的个体差异和更特殊的反应。心理物理分析进一步表明,与再现相比,估计任务产生了更陡的感知斜率和更低的截距。值得注意的是,虽然总体任务水平的感知不确定性几乎相同,但不确定性与刺激大小的标度在估计上明显更强。这些发现表明,尽管不同的认知需求塑造了其表达,但观察到的变异性大多反映了真正的感知不确定性,而不是测量误差。我们的研究结果证实,VAS和复制任务都产生了一致的感知变异性测量,强调了它们在行为研究中的价值,以及未来研究从任务特定噪声中分离内在感知过程的必要性。
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来源期刊
CiteScore
10.30
自引率
9.30%
发文量
266
期刊介绍: Behavior Research Methods publishes articles concerned with the methods, techniques, and instrumentation of research in experimental psychology. The journal focuses particularly on the use of computer technology in psychological research. An annual special issue is devoted to this field.
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