Validity of Mental Workload Measures in a Driving Simulation Environment

Figure 2

On-road vs. simulator mean score comparisons of behavioral measures of the workload (rotated figures task scores: (a) accuracy; (b) response time; (c) combined time/correctness measure) across the three dual-task sessions and of stress measures before and after drive (Short Stress State Questionnaire [SSSQ] scores: (d) Distress, (e) Task Engagement; (f) Worry). Figures inside the graph are Pearson's zero-order correlations between the scores in the simulator and scores on the road as an index of relative validity (n = 87); : p < 0.05 and p < 0.01.

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