NASA Task Load Index (NASA-TLX)

The NASA-TLX is a subjective, multidimensional workload assessment tool. It rates perceived workload on six different scales: Mental Demand, Physical Demand, Temporal Demand, Performance, Effort, and Frustration.

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Human Robot Interaction Workload Measurement (HRI-WM)

The HRI-WM assesses workload attributed to human-robot interaction. This tool measures overall workload and the amount of perceived workload for robot operators using five subscales: Team Configuration, Task, Context, Team Process, and System.