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  • Mechanisms of Vigilance Loss in Sensory and Cognitive Tasks

    Creator:
    Gyles, Shannon P.
    Abstract:
    When observers monitor for infrequent signals for extended durations, they generally experience a decline in detections over time. This decline is termed the vigilance decrement. Current theories of vigilance attribute the decrement to three potential mechanisms: conservative shifts in response bias, losses of sensitivity, and an increased rate of attentional...
    Resource Type:
    Dissertation
    Full Text:
    sensitivity (M. Deaton et al., 13 1971; Guralnick, 19720101; Hatfield & Soderquist, 1970; Williges

  • Metacognition, Numeracy, and Automation-aided Decision-making

    Creator:
    Gyles, Shannon P.
    Abstract:
    Automated decision aids can improve human decision-making but the benefits are often compromised by inefficient use. The current experiment examined whether metacognition—the ability to assess self-performance—and numeracy—the ability to understand and work with numbers—predict the efficiency of automation use in a signal detection task. Two-hundred twenty-one participants classified random dot...
    Resource Type:
    Masters Thesis
    Full Text:
    Wagenmakers (2012; see Appendix B). 34 M