Chapter 9 - Individual differences in cognitive vulnerability to fatigue in the laboratory and in the workplace
Section snippets
Trait individual differences in vulnerability to fatigue
Individual differences in tolerance for, adaptation to, and impairment from extended work hours and shift work have been documented across a range of operational settings (Gillberg and Åkerstedt, 1985, Härmä, 1995, Monk and Folkard, 1985). Evidence is accumulating that these individual differences may have a biological basis (Van Dongen, 2006), involving differences in vulnerability to fatigue (sleepiness, loss of alertness) due to sleep deprivation and circadian misalignment. Fatigue is
Individual differences in vulnerability to fatigue in operational settings
The existence of trait-like individual differences in vulnerability to fatigue may be crucially important for workers in 24/7 operational settings, such as medical personnel (Czeisler, 2009), first responders (Lammers-van der Holst et al., 2006), and aviators (Caldwell et al., 2008). However, it is not a priori evident that laboratory-based assessments of individual variability translate reliably to the workplace. In populations that are highly trained and also frequently exposed to extended
New research into distinct cognitive dimensions of vulnerability to fatigue
The curious finding that systematic individual differences in vulnerability to sleep loss depend on the outcome measure at hand, both in a highly controlled study of healthy young adults from the general population using laboratory measures of performance and fatigue (Van Dongen et al., 2004a) and in a simulator study of highly selected, active-duty jet fighter pilots using high-fidelity simulated flight performance measures (Van Dongen et al., 2006), suggests that there is much to learn yet
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