Chun Joohyung, Lee Dasom, Lee Youngeun, Cho Soohyun
Department of Psychology, Chung-Ang University, South Korea.
Scand J Psychol. 2018 Jun;59(3):252-261. doi: 10.1111/sjop.12445. Epub 2018 Apr 14.
There has been great interest in the idea that time, number, and space share a common magnitude system. However, only a handful of studies examined bidirectional interaction between time and number and the results varied depending on the specifics of the methods and stimulus properties of each study. The present study investigated bidirectional interaction between time and number using estimation tasks. We used duration (Experiment 1) and numerosity (Experiment 2) estimation tasks to investigate the effect of numerosity-on-duration and duration-on-numerosity estimation. The results from the two experiments demonstrated that numerosity influences duration processing but not vice versa; that is, there was unidirectional interaction between numerosity and time. The duration of stimulus presentation was overestimated for stimuli larger in (task-irrelevant) numerosity. Possible mechanisms underlying the unidirectional interaction between time and number are discussed.
时间、数字和空间共享一个通用量级系统的观点引发了极大的兴趣。然而，只有少数研究考察了时间与数字之间的双向交互作用，并且结果因每项研究的方法细节和刺激属性而异。本研究使用估计任务考察了时间与数字之间的双向交互作用。我们使用时长（实验1）和数量（实验2）估计任务来研究数量对时长估计以及时长对数量估计的影响。两个实验的结果表明，数量会影响时长处理，反之则不然；也就是说，数量与时间之间存在单向交互作用。对于（与任务无关的）数量较大的刺激，其呈现时长被高估了。本文还讨论了时间与数字之间单向交互作用背后可能的机制。
