Abstract
Cognitive resource theory is a common explanation for both the performance decline in vigilance tasks, known as the vigilance decrement, and the limited ability to perform multiple tasks simultaneously. The limited supply of cognitive resources may be utilized faster than they are replenished resulting in a performance decrement, or may need to be allocated among multiple tasks with some performance cost. Researchers have proposed both domain-specific, for example spatial versus verbal processing resources, and domain general cognitive resources. One challenge in testing the domain specificity of cognitive resources in vigilance is the current lack of difficult semantic vigilance tasks which reliably produce a decrement. In the present research, we investigated whether the vigilance decrement was found in a new abbreviated semantic discrimination vigilance task, and whether there was a performance decrement in said vigilance task when paired with a word recall task, as opposed to performed individually. As hypothesized, a vigilance decrement in the semantic vigilance task was found in both the single-task and dual-task conditions, along with reduced vigilance performance in the dual-task condition and reduced word recall in the dual-task condition. This is consistent with cognitive resource theory. The abbreviated semantic vigilance task will be a useful tool for researchers interested in determining the specificity of cognitive resources utilized in vigilance tasks.
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Appendix
Appendix
Word recall list 1
Ankle, banner, bullet, cowhide, doorman, hostage, icebox, infant, leopard, locker, missile, monarch, mucous, piano, pudding, saloon, slipper, sulfur, sunburn, thicket.
Word recall list 2
Bandit, blister, butcher, fabric, fiord, harness, jelly, lobster, morgue, nectar, pepper, piston, rattle, reptile, salad, settler, singer, sultan, trumpet, typhoon.
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Epling, S.L., Russell, P.N. & Helton, W.S. A new semantic vigilance task: vigilance decrement, workload, and sensitivity to dual-task costs. Exp Brain Res 234, 133–139 (2016). https://doi.org/10.1007/s00221-015-4444-0
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DOI: https://doi.org/10.1007/s00221-015-4444-0