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Table 2 Cognitive, visual, subjective, and temporal demand as a function of task type

From: Assessing the visual and cognitive demands of in-vehicle information systems

Task Type Mean Lower Upper
Cognitive demand of task types
 Audio entertainment 1.21 1.17 1.24
 Calling and dialing 1.13 1.10 1.16
 Text messaging 1.19 1.16 1.23
 Navigation 1.16 1.11 1.21
Visual demand of task types
 Audio entertainment 1.22 1.18 1.25
 Calling and dialing 1.04 1.01 1.08
 Text messaging 1.02 0.98 1.07
 Navigation 1.32 1.26 1.38
Subjective demand of task types
 Audio entertainment 0.81 0.78 0.84
 Calling and dialing 0.78 0.75 0.81
 Text messaging 0.83 0.79 0.87
 Navigation 0.96 0.90 1.01
Temporal demand of task types
 audio entertainment 0.78 0.76 0.79
 Calling and dialing 0.93 0.91 0.95
 Text messaging 1.28 1.24 1.31
 Navigation 1.84 1.79 1.89