Table 2.
Correlations between age and the difference in frequency of behavior between eyes invisible and eyes visible condition in each manipulation
| Eyes-closed vs. eyes-open |
Eyes-covered vs. mouth-covered |
|||
|---|---|---|---|---|
| r | p | r | p | |
| Gestures | −0.06 | 0.55 | 0.07 | 0.44 |
| Other visual gestures | −0.12 | 0.19 | −0.03 | 0.72 |
| Vocalizations | 0.04 | 0.69 | −0.04 | 0.68 |
| Attention getting behaviors | 0.08 | 0.42 | −0.28 | 0.003 |
Negative values represent a tendency for older animals to demonstrate more behaviors when the experimenter’s eyes were visible. A significant comparison is p<0.006, following Bonferroni adjustment for multiple comparisons