Abstract
Effectively mitigating the vigilance decrement (the decrease in performance on tasks requiring sustained attention over time) is one of the most important human factors problems studied today. Despite this, the underlying theory of vigilance and its failings are still disputed. The two primary theories espoused by researchers today are a cognitive resource theory of vigilance and a mindlessness theory of vigilance. This literature review examines the literature investigating points of conflict between these theories, revealing that the majority of experimental research supports a cognitive resource theory of vigilance. Additionally, we examine research investigating the effect of active rest breaks on cognitive and affective restoration. The literature available on cognitive restoration does not support the suggestion that active rest breaks help restore vigilance-relevant cognitive resources more effectively than passive rest breaks. The research does however, support the proposition that more active rest breaks can reduce stress and increase affect. The potential for increasing worker well-being with more active breaks warrants additional research.
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