ABSTRACT
This chapter describes the collaboration to model the attention and mental effort of officers engaged in team decision making. A new metric based on pupil dilation was used to measure cognitive workload. The complex activity of tactical decision making has many components, including the focused attention and increased mental effort of those engaged in the decision making. The schema model employed here is the model first defined by Marshall for the domain of problem solving and later extended to tactical decision making. The new technique used here provides continuous recording and analysis of pupil size, allowing estimation of cognitive workload over sustained periods of time across many different task components for a single individual. The Index of Cognitive Activity is calculated from high-frequency components of this signal as an individual performs a specified task. The results from the communication analysis suggest that the teams were experiencing higher cognitive workload during the mismatched condition.
