Department of Linguistics and Modern Languages/Brain and Mind Institute, The Chinese University of Hong Kong, Hong Kong SAR, China.
Guangdong Provincial Key Laboratory of Mental Health and Cognitive Science, Center for Studies of Psychological Application, School of Psychology, South China Normal University, China.
Acta Psychol (Amst). 2022 Jul;227:103608. doi: 10.1016/j.actpsy.2022.103608. Epub 2022 May 13.
Magnitudes of different physical dimensions have been assumed to be processed by a common metric in order to account for interactions between different dimensions (e.g., space, time). This paper tested a different hypothesis, that these cross-dimensional interactions reflect people's experience of statistical correlations among physical dimensions. In the experiment, we manipulated the correlation between space (length) and time (duration). A stimulus consisting of two vertical bars that demarcated a variable stimulus length was presented for a variable stimulus duration; participants were to reproduce either the stimulus length or the stimulus duration. Critically, to reproduce a stimulus length, participants held down the spacebar to grow or shrink (in a blocked design) a length to the stimulus length such that space (i.e. reproduced length) positively or negatively co-varied with time. Reproduced lengths did not vary as a function of stimulus duration under positive space-time correlation but decreased as a function of stimulus duration under negative space-time correlation; reproduced durations increased as a function of stimulus length under positive space-time correlation but this space-on-time effect appeared to be attenuated under negative space-time correlation. These findings are consistent with a Bayesian inference account whereby cross-dimensional interactions reflect people's prior belief/knowledge of cross-dimensional statistical correlation, which itself tunes to recent input.
不同物理维度的大小被认为是通过一个共同的度量标准来处理的，以解释不同维度（如空间、时间）之间的相互作用。本文测试了一个不同的假设，即这些跨维度的相互作用反映了人们对物理维度之间统计相关性的体验。在实验中，我们操纵了空间（长度）和时间（持续时间）之间的相关性。一个由两条垂直的线组成的刺激，标记了一个可变的刺激长度，呈现了一个可变的刺激持续时间；参与者需要复制刺激的长度或持续时间。关键的是，为了复制一个刺激的长度，参与者按下空格键，以块的设计来增长或缩小（增长或缩小）一个长度到刺激的长度，使得空间（即复制的长度）与时间呈正或负相关。在正时空相关条件下，复制长度不会随刺激持续时间而变化，但在负时空相关条件下，复制长度会随刺激持续时间而减少；在正时空相关条件下，复制的持续时间会随刺激的长度而增加，但这种空间对时间的影响似乎在负时空相关条件下减弱了。这些发现与贝叶斯推理理论一致，即跨维度的相互作用反映了人们对跨维度统计相关性的先验信念/知识，而这种先验信念/知识本身会根据最近的输入进行调整。
