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- Title
Response Complexity Reduces Errors on a Response Inhibition Task.
- Authors
Head, James; Tenan, Matthew S.; Tweedell, Andrew J.; Wilson, Kyle M.; Helton, William S.
- Abstract
<bold>Objective: </bold>The purpose of this investigation was to elucidate the role of button-response complexity to targets in a response inhibition task.<bold>Background: </bold>Response inhibition is the ability to correctly inhibit an overt response to a target. The U.S. military is actively pursuing development of armed, combat robots as a force multiplier, which may present challenges to operators of combat robots in the form of response inhibition errors.<bold>Method: </bold>A total of 15 participants completed two 51-min versions of a modified sustained attention to response task (SART). Participants were outfitted with an electrocardiogram to index heart-rate variability and completed the NASA-Task Load Index (NASA-TLX) to index workload.<bold>Results: </bold>The results demonstrated that the complex SART reduced errors of commission (4%) and slowed response times (874 ms) to correct Go targets relative to the simple SART (14%, 739 ms). The NASA-TLX did not show differences between the modified SARTs; however, heart-rate variability did demonstrate that Soldiers had an increased autonomic stress response to the complex SART.<bold>Conclusion: </bold>Increasing the behavioral response requirement during a response inhibition task can decrease errors of commission; however, it comes at the cost of slower response times to target stimuli. Heart-rate variability may provide better insight into objective workload relative to subjective measures.<bold>Application: </bold>The use of complex behavioral responses may provide a viable option to reduce potential "friendly fire" or collateral damage by Soldiers remotely engaging a target-rich environment.
- Subjects
RESPONSE inhibition; TASKS; PATIENT monitoring equipment; TASK performance; ROBOTICS; REACTION time; TECHNOLOGY; MILITARY personnel
- Publication
Human Factors, 2020, Vol 62, Issue 5, p787
- ISSN
0018-7208
- Publication type
journal article
- DOI
10.1177/0018720819852801