Table 3.
Robustness, precision and accuracy during the validation sequence before and after the face-to-face conversation. Quality indices were averaged for gaze data on left and right eyes, nose, and mouth.
| Pre-conversation | Post-conversation | t(41) | p | r | |||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ||||
| Robustness | |||||||
| % valid data | 95.54 | 6.90 | 93.96 | 11.17 | 0.98 | 0.332 | 0.15 |
| Precision (SD) | |||||||
| In degrees | 0.45 | 0.16 | 0.45 | 0.18 | − 0.09 | 0.932 | 0.01 |
| In cm | 1.03 | 0.39 | 1.03 | 0.41 | |||
| Accuracy | |||||||
| In degrees | 0.52 | 0.19 | 0.50 | 0.24 | 0.51 | 0.610 | 0.08 |
| In cm | 1.21 | 0.43 | 1.14 | 0.55 | |||
Precision (SD) = standard deviation of data samples (Holmqvist et al., 2011).