CAS Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
Department of Psychology, University of Chinese Academy of Sciences, Beijing, China.
Psych J. 2021 Feb;10(1):20-32. doi: 10.1002/pchj.397. Epub 2020 Sep 9.
Tonic pupil size and its variability are sensitive to cognitive abilities (such as fluid intelligence [Gf]) among individuals. The present study aimed to examine this relationship in a new sample set (i.e., adolescents aged 11-14 years) with several important factors considered. We conducted two task-free tasks (the blank-screen viewing task and the scene viewing task) to measure tonic pupil size and its variability in 11-14-year-old adolescents with different Gf levels and preliminarily tested the role of task type and stimuli's luminance on this relationship. The results found that high-Gf adolescents showed smaller tonic pupil size in both tasks but showed larger variability of tonic pupil size in the blank-screen viewing task. Task type and stimuli's luminance could influence tonic pupil size and its variability in different ways. Cognitive and underlying neural mechanisms of these results are discussed to provide an explanation and suggestions for future studies.
瞳孔的紧张度大小及其变化幅度对个体的认知能力（如流体智力[Gf]）较为敏感。本研究旨在通过考虑多个重要因素，在新的样本集中（即 11-14 岁青少年）检验这种关系。我们进行了两项无任务的任务（空白屏幕观看任务和场景观看任务），以测量不同 Gf 水平的 11-14 岁青少年的瞳孔紧张度大小及其变化幅度，并初步测试了任务类型和刺激亮度对这种关系的影响。结果发现，高 Gf 青少年在两项任务中表现出较小的瞳孔紧张度大小，但在空白屏幕观看任务中表现出较大的瞳孔紧张度变化幅度。任务类型和刺激亮度可能以不同的方式影响瞳孔紧张度大小及其变化幅度。我们讨论了这些结果的认知和潜在神经机制，为未来的研究提供了解释和建议。
