Table 3. Sequence of baseline and delay conditions for Experiment 3, and the number of sessions conducted for each.
| Pigeon | Contingency for conditioned reinforcement | Number of sessions |
| 276 | FR 1 | 22 |
| Tandem FR 1 DRO 5 s (unsignaled) | 20 | |
| FR 1 | 40 | |
| Tandem FR 1 DRO 5 s (signaled) | 20 | |
| FR 1 | 30 | |
| 3504 | FR 1 | 23 |
| Tandem FR 1 DRO 5 s (unsignaled) | 20 | |
| FR 1 | 45 | |
| Tandem FR 1 DRO 5 s (signaled) | 20 | |
| FR 1 | 29 | |
| 1794 | FR 1 | 29 |
| Tandem FR 1 DRO 5 s (unsignaled) | 20 | |
| FR 1 | 30 | |
| Tandem FR 1 DRO 5 s (signaled) | 20 | |
| FR 1 | 31 | |
| 516 | FR 1 | 22 |
| Tandem FR 1 DRO 5 s (unsignaled) | 20 | |
| FR 1 | 38 | |
| Tandem FR 1 DRO 5 s (signaled) | 20 | |
| FR 1 | 28 |