Dynamical analysis in real time: detecting perturbations to team communication
Dynamical systems methods characterise patterns of change over time. Typically, such methods are applied only after data collection is complete. However, brief disturbances – perturbations – can occur as a process unfolds and can result in undesirable outcomes if
not acted on. The application of dynamics in real time would be useful for detecting these sudden changes. Real-time analysis was accomplished by updating dynamical estimates simultaneously across different window sizes. We calculated the largest Lyapunov exponent, a measure of dynamical stability,
to detect a perturbation to team communication in a simulated uninhabited air vehicle (UAV) reconnaissance mission. The perturbation consisted of information demands from a confederate that occurred unexpectedly during performance of a UAV mission. We demonstrate the use of real-time methods
in detecting that perturbation as it occurred. In application, this technique would have enabled real-time intervention. Extensions of the real-time dynamical method to other domains of psychological inquiry are discussed.
Practitioner Summary: A real-time dynamical analysis method
that was developed to detect unexpected perturbations in team communication is described. The use of the method is demonstrated on perturbed communication from a three-person uninhabited air vehicle command-and-control team. The generalisability of the method is considered with respect to
physiological and motor coordination dynamics.
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Document Type: Research Article
Department of Psychology,Texas Tech University, Lubbock,TX
Department of Psychology,University of Minnesota Duluth, Duluth,MN
Department of Psychology,Arizona State University, Tempe,AZ
Department of Cognitive Science and Engineering,Arizona State University, Mesa,AZ
Sandia Research Corporation, Mesa,AZ
August 1, 2012
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