Marga Hoogendoorn

156 Appendix 4 NASA-TLX – questionnaire Mental Demand: How much mental and perceptual activity was required? Was the task easy or demanding, simple or complex? Minimal Maximal 0 0 0 0 0 0 0 0 0 0 0 Physical Demand: How much physical activity was required? Was the task easy or demanding, slack or strenuous? Minimal Maximal 0 0 0 0 0 0 0 0 0 0 0 Temporal Demand: How much time pressure did you feel due to the pace at which the tasks or task elements occurred? Was the pace slow or rapid? Minimal Maximal 0 0 0 0 0 0 0 0 0 0 0 Overall Performance: How successful were you in performing the task? How satisfied were you with your performance? Good Poor 0 0 0 0 0 0 0 0 0 0 0 Frustration Level: How irritated, stressed, and annoyed versus content, relaxed, and complacent did you feel during the task? Minimal (content, relaxed etc.) Maximal (irritated, stressed etc.) 0 0 0 0 0 0 0 0 0 0 0