Workload

Question 1

Workload

Answer 1

refers to the total amount of work or effort that a person, or group of people, is to perform within a time limit
As task demands increase, or the time allowed to perform a task decreases, workload increases

Question 2

overload and underload

Answer 2

Performance may suffer if the workload is too high (overload) or if it is too low (underload)

Question 3

Empirical techniques

Answer 3

used to measure and assess workload directly in a system or simulated system

Question 4

Analytical techniques

Answer 4

used to predict workload demands early in the system development process

Question 5

Empirical techniques (4 major types)

Answer 5

Primary Task
Secondary Task
Physiological (or psychophysiological)
Subjective

Question 6

Primary Task Measures

Answer 6

Evaluate the mental workload requirements of a task by directly examining performance of the user or of the overall system

Question 7

Secondary Task Measures

Answer 7

Workload can be assessed by manipulating the primary or secondary task difficulty and observing changes in performance of the other task

Question 8

psychophysiological measures

Answer 8

Benefit: can provide constant measurements of the dynamic changes in workload as an operator is engaged in the task, without requiring a second task
Downside: require sophisticated equipment and the equipment may interfere with the primary task you’re trying to measure

Question 9

Subjective assessment techniques

Answer 9

evaluate workload by obtaining users’ judgments about their tasks
Typically ask users to rate overall mental workload or several components of workload

Question 10

Task analysis

Answer 10

decomposes an overall goal into subgoals, and ultimately into elemental task requirements (operations and plans)