This Questionnaire will measure your task workload. Below you will find the definitions of six workload factors. You will do the NASA-TLX questionnaire on the computer using the program, TLX.EXE. Its GUI will first ask for your ID; your test administrator can give that to you. It will then ask you to rate each of the factors on a sliding scale. Please click on the scale to represent how low/high or good/poor you felt for each of the factors during the task. The GUI will then go through each of the 15 combinations of 2 factors, asking you which of the two contributed more to your workload during the task. Select one by clicking on its button to move on to the next combination.

Mental Demand Low/High How much mental and perceptual activity was required (e.g. thinking, deciding, calculating, remembering, looking, searching, etc.)? Was the task easy or demanding, simple or complex, exacting or forgiving?
Physical Demand Low/High How much physical activity was required (e.g. pushing, pulling, turning, controlling, activating, etc.)? Was the task easy or demanding, slow or brisk, slack or strenuous, restful or laborious?
Temporal Demand Low/High How much time pressure did you feel due to the rate or pace at which the tasks or task elements occurred? Was the pace slow and leisurely or rapid and frantic?
Effort Low/High How hard did you have to work (mentally and physically) to accomplish your level of performance?
Performance Good/Poor How successful do you think you were in accomplishing the goals of the task set by the experimenter (or yourself)? How satisfied were you with your performance in accomplishing these goals?
Frustration Level Low/High How insecure, discouraged, irritated, stressed and annoyed versus secure, gratified, content, relaxed and complacent did you feel during the task?