Table 3. NASA-TLX Workload Item

Title Endpoints Definition
Mental demand Low/high How much mental and perceptual activity was required?
Physical demand Low/high How much physical activity was required?
Temporal demand Low/high How much time pressure did you feel due to the rate or pace at which the tasks or tasks elements occurred?
Performance Good/poor How successful do you think you were in accomplishing the goals of the task set by the experimenter? How satisfied were you with your performance in accomplishing these goals?
Effort Low/high How hard did you have to work to accomplish your level of performance?
Frustration level Low/high How insecure, discourage, irritated, stressed and annoyed versus secure, gratified, content, relaxed and complacent did you feel during the task?