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DTSTAMP:20261012T210904Z
LOCATION:Summit Pavilion
DTSTART;TZID=America/Los_Angeles:20261021T173000
DTEND;TZID=America/Los_Angeles:20261021T183000
UID:HFESAM_ASPIRE 2026_sess257_POST344@linklings.com
SUMMARY:Metrics of Vigilance Decrement
DESCRIPTION:Sarah Baker (Oregon State University)\n\nAlthough the vigilanc
 e decrement has been a central topic in human factors since the start of t
 he field, there is no agreed-upon measurement of vigilance performance app
 ropriate for theory testing. We audited the literature to examine the rela
 tive frequency of several indexes of detection performance in vigilance mo
 nitoring tasks. We restricted inclusion to peer-reviewed reports of primar
 y vigilance data from human participants at signal rate < .25, and reporti
 ng changes over time to at least one measure of detection performance. Eac
 h article was assigned to two independent coders, with conflicts resolved 
 by a senior researcher. Approx. 75% of articles reported signal detection 
 measures of sensitivity, with d’ and A’ accounting for close to 85% of the
 se reports. Only 60% reported both sensitivity and bias, and only 50% of s
 ensitivity analyses also reported raw detection rates. The literature appe
 ars skewed towards reports of sensitivity. Critically, reports typically f
 ail to include the minimum information necessary to assess construct valid
 ity of these measures. Findings suggest a need reexamine the quality of ev
 idence for sensitivity decrements, and to develop standardized guidelines 
 for vigilance measurement.\n\n
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