TY - GEN
T1 - Supporting change detection in complex dynamic situations
T2 - Proceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, HFES 2012
AU - Vallières, Benoit R.
AU - Hodgetts, Helen M.
AU - Vachon, François
AU - Tremblay, Sébastien
PY - 2012/9/1
Y1 - 2012/9/1
N2 - Change detection is required in monitoring and managing complex situations such as air traffic control. Considering that change blindness - the incapacity to detect changes in a visual scene - is a considerable source of human errors and that most studies on change detection have involved static visual scenes, it is crucial to evaluate existing tools designed to help this cognitive function in complex dynamic situations. The goal of the present study was to determine the efficacy of the Change History Explicit (CHEX) - a tool already proven effective when explicit change detection is the only task to execute - when change detection is implicit and intrinsic to a more complex task. Results revealed that the CHEX failed to improve implicit change detection when this task was embedded in a threat-evaluation and weapon-assignment (TEWA) task. Moreover, TEWA performance was hindered and mental workload was perceived as higher when the CHEX was available. Even when the information load imposed by the CHEX was reduced, the tool remained ineffective. This suggests that the nature of the change detection task should be taken into account when designing a decision support system.
AB - Change detection is required in monitoring and managing complex situations such as air traffic control. Considering that change blindness - the incapacity to detect changes in a visual scene - is a considerable source of human errors and that most studies on change detection have involved static visual scenes, it is crucial to evaluate existing tools designed to help this cognitive function in complex dynamic situations. The goal of the present study was to determine the efficacy of the Change History Explicit (CHEX) - a tool already proven effective when explicit change detection is the only task to execute - when change detection is implicit and intrinsic to a more complex task. Results revealed that the CHEX failed to improve implicit change detection when this task was embedded in a threat-evaluation and weapon-assignment (TEWA) task. Moreover, TEWA performance was hindered and mental workload was perceived as higher when the CHEX was available. Even when the information load imposed by the CHEX was reduced, the tool remained ineffective. This suggests that the nature of the change detection task should be taken into account when designing a decision support system.
UR - http://www.scopus.com/inward/record.url?scp=84873470417&partnerID=8YFLogxK
U2 - 10.1177/1071181312561342
DO - 10.1177/1071181312561342
M3 - Conference contribution
AN - SCOPUS:84873470417
SN - 9780945289418
T3 - Proceedings of the Human Factors and Ergonomics Society
SP - 1708
EP - 1712
BT - Proceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, HFES 2012
Y2 - 22 October 2012 through 26 October 2012
ER -