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Where is my mind? Examining mind-wandering and vigilance performance.
Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale 2018 November 28
Vigilance is the ability to sustain attention to information for prolonged periods of time, particularly in environments where critical signals may be rare. Recent research in the domain of mind-wandering has suggested that processes associated with mind-wandering may underpin the typical decline in vigilance task performance. Current methods for measuring mind-wandering either disrupt vigils by asking probe questions throughout the task, or, require observers to reflect on how much mind-wandering occurred during the task upon conclusion of the vigil. Across three experimental studies, we treat mind-wandering as an individual difference, which was measured pre- and post-vigil. We argue this technique is a more holistic representation of mind-wandering and is less intrusive than probe measures, which serve to disrupt the vigil. The results of our first experiment challenge previous results in the literature: higher rates of mind-wandering were associated with improved correct detection performance. Interestingly, the second experiment suggests that increases in mind-wandering were not linked to vigilance performance deficits. However, significant differences in global workload emerged in the second experiment, implying individuals low in mind-wandering report greater workload. In a third experiment, wherein we manipulated event rate, mind-wandering typology had no significant effect on vigilance performance. We conclude with a discussion of the relevance of individual differences in mind-wandering in vigilance research considering the present findings.
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