| Definitions of Demand and Workload | Demand; what the task is asking of you (task demands)
Workload; How you feel and manage the demands |
| Features of demand | Pace of work Difficulty of work (physical or cognitive) Complexity of work Risks and priorities |
| Features of workload | Available resources (cognitive, in the workplace) Strategy - knowledge and preferences Fatigue |
| Measuring demand and workload | Measuring demand can be straightforward Workload tends to be hidden; Primary task performance (time, error). Secondary task performance (completion, time, error). Physiological measrures (cardiac, brain). Subjective scales (single dimension scale (integrated workload scale), multi dimensional scale (NASA-TLX)) |
| Pros and cons of NASA-TXL | Pros and Cons |
| What is the NASA-TXL | Asseses work load on 5, 7 point scales in terms of the forrlowing areas; Mental demand, Physical demand, Temporal demand, Performance, Effort, Frustration Multiple dimensions of workload Most common tool Used in a range of different settings |
