Stawarczyk David, D'Argembeau Arnaud
Department of Psychology, Psychology and Neuroscience of Cognition Research Unit, University of Liège.
J Exp Psychol Hum Percept Perform. 2016 Oct;42(10):1587-1600. doi: 10.1037/xhp0000254. Epub 2016 Jun 6.
Recent research suggests that sleepiness and mind-wandering-the experience of thoughts that are both stimulus-independent and task-unrelated-frequently co-occur and are both associated with poorer cognitive functioning. Whether these two phenomena have distinguishable effects on task performance remains unknown, however. To investigate this question, we used the online experience sampling of mind-wandering episodes and subjective sleepiness during a laboratory task (the Sustained Attention to Response Task; SART), and also assessed mind-wandering frequency and sleep-related disturbances in daily life using self-report questionnaires. The results revealed that the tendency to experience mind-wandering episodes during the SART and daily life was associated with higher levels of daytime sleepiness and sleep-related disturbances. More important, however, mind-wandering and sleepiness were independent predictors of SART performance at both the within- and between-individuals levels. These findings demonstrate that, although mind-wandering and sleepiness frequently co-occur, these two phenomena have distinguishable and additive effects on task performance. (PsycINFO Database Record
最近的研究表明，困倦和走神（即与刺激无关且与任务无关的思维体验）经常同时出现，并且都与较差的认知功能有关。然而，这两种现象对任务表现是否有不同的影响仍然未知。为了研究这个问题，我们在一项实验室任务（持续注意力反应任务；SART）中使用了在线体验抽样方法来研究走神事件和主观困倦情况，并且还使用自我报告问卷评估了日常生活中的走神频率和与睡眠相关的干扰。结果显示，在SART任务期间和日常生活中经历走神事件的倾向与更高水平的日间困倦和与睡眠相关的干扰有关。然而，更重要的是，走神和困倦在个体内部和个体之间的层面上都是SART表现的独立预测因素。这些发现表明，尽管走神和困倦经常同时出现，但这两种现象对任务表现有不同且累加的影响。（PsycINFO数据库记录）
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