Workload definitions? Physical Workload O Traditional view of work for manual labor u Can be measured in physical terms (ergs, joules u Limited impact of skill to minimize(ie subject variability) ·“ Mental work|oad u Often not related to physical work o Internal measure difficult to observe u Varies with task difficulty and complexity u Significant subject variability o No real consensus on what it is u Workload is a" dirty"word in Experimental Psychology Activity 口 Things that are done u Physical activity easy to measure Taskload O EXternal measure of tasks which need to be done u Can be weighted for factors such as task difficulty or complexityInterface System Supervisory Control Computer Display Control Sensors Direct Observation Workload Definitions? ü Physical Workload o Traditional view of work for manual labor o Can be measured in physical terms (ergs, joules, ..) o Limited impact of skill to minimize (ie subject variability) ü “Mental” Workload o Often not related to physical work o Internal measure difficult to observe o Varies with task difficulty and complexity o Significant subject variability o No real consensus on what it is o Workload is a “dirty” word in Experimental Psychology ü Activity o Things that are done o Physical activity easy to measure ü Taskload o External measure of tasks which need to be done o Can be weighted for factors such as task difficulty or complexity