Workload Theory and Workload Modelling
Another aspect to workload is the mathematical predictive models used in human factors analysis; generally to support the design and assessment of safety-critical systems.
There is no one agreed definition of workload and consequently not one agreed method of assessing or modelling it. One example definition by Hart and Staveland (1988) describes workload as "the perceived relationship between the amount of mental processing capability or resources and the amount required by the task". Workload modelling is the analytical technique used to measure and predict workload. The main objective of assessing and predicting workload is to achieve evenly distributed, manageable workload and to avoid overload or underload.
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