Table 1 Percentages of errors (and standard errors) under each condition among chimpanzees in Experiment 2.
| Â | Â | Control | Gap | Occluded |
|---|---|---|---|---|
Square-Shadow | No Shadow | 0(0.0) | 1.3(1.5) | 7.2(4.5) |
| Â | Shadow | 1.3(0.9) | 10(5.6) | 10(5.2) |
Pacman-Shadow | No Shadow | 0(0.0) | 1.3(1.5) | 3.4(2.5) |
| Â | Shadow | 4.4(2.3) | 7.5(1.3) | 8.8(2.9) |