Table 2 Results of system usability scale, decisional conflict, and eye tracking
Conventional | DCIDA | |
|---|---|---|
System Usability Score, mean (range) | - | 74 (68–85) |
Decisional conflict uncertainty subscale (0 = good, 4 = bad), | ||
I am clear about the best choice for me | 2.9 | 2.3 |
I feel sure about what to choose | 2.8 | 2.2 |
This decision is easy for me to make | 3.4 | 3.1 |
Overall score | 50.4 | 38.3 |
Mean fixation duration (secs) | ||
Most important attribute | 4.7 | 5.6 |
2nd most important attribute | 4.2 | 3.3 |
Least important attribute | 3.1 | 1.1 |
Other attributes | 14.1 | 8.5 |
Other areas of the screen | 16.2 | 12.8 |
Total | 42.3 | 31.3 |
Mean relative fixation | ||
Most important attribute | 18% | 30% |
2nd most important attribute | 16% | 18% |
Least important attribute | 12% | 6% |
Relative fixation – in 7 participants changed preference | ||
Most important attribute | 17% | 34% |
2nd most important attribute | 14% | 19% |
Least important attribute | 10% | 5% |