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 |