Table 1. Mean (Standard Deviation) Proportion of Sincere Responses to Each Stimulus Level, in Each Condition, for Experiments 1–3.
| Experiment | Smile morph level (percent sincere) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20% | 30% | 40% | 50% | 60% | 70% | 80% | ||||||||
| Experiment 1 | ||||||||||||||
| Whole face | 2.7% | (1.2) | 2.3% | (0.7) | 22.3% | (3.3) | 69.4% | (4.2) | 90.2% | (2.7) | 95.4% | (1.4) | 98.1% | (0.7) |
| Eyes only | 4.0% | (1.4) | 6.9% | (1.8) | 21.5% | (2.9) | 61.0% | (5.3) | 82.9% | (3.3) | 93.8% | (1.6) | 95.0% | (1.2) |
| Mouth only | 8.8% | (2.0) | 16.7% | (3.1) | 38.5% | (4.9) | 61.5% | (5.7) | 78.8% | (3.9) | 88.3% | (3.2) | 95.0% | (1.2) |
| Experiment 2 | ||||||||||||||
| Baseline | 1.5% | (0.7) | 5.8% | (2.6) | 20.2% | (4.4) | 58.5% | (6.4) | 83.8% | (4.1) | 95.0% | (2.3) | 97.5% | (1.5) |
| Produce /u/ | 2.7% | (1.4) | 6.7% | (2.0) | 22.9% | (5.0) | 57.1% | (5.0) | 75.8% | (5.0) | 91.7% | (2.1) | 95.2% | (2.1) |
| Produce /i/ | 3.1% | (1.2) | 8.8% | (3.4) | 22.1% | (4.4) | 52.9% | (6.0) | 80.0% | (4.7) | 90.8% | (2.6) | 95.2% | (2.1) |
| Experiment 3 | ||||||||||||||
| Baseline | 1.7% | (0.8) | 5.6% | (1.8) | 24.4% | (4.5) | 64.0% | (4.7) | 89.0% | (2.3) | 96.5% | (1.5) | 96.5% | (1.7) |
| Produce /i/ | 5.4% | (2.3) | 7.3% | (2.8) | 26.7% | (4.5) | 65.2% | (3.9) | 88.3% | (2.3) | 92.1% | (2.0) | 95.2% | (1.7) |
| Passive /i/ | 2.5% | (2.1) | 7.1% | (3.7) | 23.8% | (5.4) | 59.8% | (4.4) | 84.2% | (2.7) | 96.9% | (1.0) | 97.3% | (1.0) |