Cumulative seconds of caregiving responses (Experiment 2)
| Caregiving Response | |||||
| Participant | Experimental condition | Toy 1 | Toy 2 | Toy 3 | Toy 4 |
| 8 | Seconds | ||||
| Sr- toy 1 | 397 | 37 | 44 | 0 | |
| Sr- toy 1 | 494 | 0 | 0 | 0 | |
| Sr- toy 1 | 285 | 0 | 0 | 0 | |
| Sr- toy 2 | 10 | 272 | 0 | 0 | |
| Extinction | 117 | 105 | 9 | 4 | |
| Sr-toy 3/extinction (Sr- toy 3) | 38 | 9 | 300 | 0 | |
| Sr-toy 3/extinction (extinction) | 63 | 40 | 42 | 19 | |
| 9 | |||||
| Sr- toy 1 | 393 | 30 | 31 | 110 | |
| Sr- toy 1 | 730 | 107 | 0 | 0 | |
| Sr- toy 1 | 303 | 0 | 0 | 0 | |
| Sr- toy 2 | 19 | 595 | 0 | 0 | |
| Extinction | 52 | 57 | 11 | 29 | |
| Sr- toy 3/extinction (Sr- toy 3) | 16 | 16 | 300 | 0 | |
| Sr-toy 3/extinction (extinction) | 130 | 7 | 152 | 29 | |
| 10 | |||||
| Sr- toy 1 | 498 | 5 | 17 | 5 | |
| Sr- toy 1 | 272 | 3 | 0 | 0 | |
| Sr- toy 1 | 287 | 0 | 0 | 0 | |
| Sr- toy 2 | 49 | 285 | 0 | 0 | |
| Extinction | 50 | 43 | 10 | 22 | |
| Sr- toy 3/extinction (Sr- toy 3) | 11 | 9 | 300 | 9 | |
| Sr- toy 3/extinction (extinction) | 73 | 25 | 47 | 9 | |
| 11 | |||||
| Sr- toy 1 | 261 | 26 | 11 | 4 | |
| Sr- toy 1 | 281 | 21 | 0 | 0 | |
| Sr- toy 1 | 287 | 0 | 0 | 0 | |
| Sr- toy 2 | 10 | 272 | 0 | 0 | |
| Extinction | 97 | 40 | 29 | 28 | |
| Extinction | 48 | 31 | 26 | 37 | |
| Extinction | 47 | 17 | 27 | 20 | |
| Sr- toy 3/extinction (Sr- toy 3) | 63 | 30 | 300 | 13 | |
| Sr- toy 3/extinction (extinction) | 38 | 15 | 63 | 30 | |
| 12 | |||||
| Sr- toy 1 | 377 | 7 | 3 | 3 | |
| Sr- toy 1 | 271 | 4 | 6 | 4 | |
| Sr- toy 1 | 294 | 0 | 0 | 0 | |
| Sr- toy 1 | 411 | 0 | 0 | 0 | |
| Sr- toy 2 | 7 | 402 | 0 | 0 | |
| Extinction | 7 | 11 | 13 | 11 | |
| Sr- toy 3/extinction | 4 | 2 | 68 | 3 | |
| Sr- toy 3/extinction (Sr- toy 3) | 3 | 0 | 300 | 0 | |
| Sr- toy 3/extinction (extinction) | 78 | 22 | 65 | 43 | |
| 13 | |||||
| Sr- toy 1 | 511 | 3 | 10 | 0 | |
| Sr- toy 1 | 301 | 0 | 0 | 0 | |
| Sr- toy 1 | 311 | 0 | 0 | 0 | |
| Sr- toy 2 | 11 | 274 | 1 | 0 | |
| Extinction | 0 | 3 | 0 | 0 | |
| Sr- toy 3/extinction | 0 | 0 | 0 | 0 | |
| Sr- toy 3/extinction | 0 | 0 | 0 | 0 | |
| Sr- toy 3/extinction (Sr- toy 3) | 3 | 5 | 405 | 0 | |
| Sr- toy 3/extinction (extinction) | 51 | 44 | 127 | 0 | |
| 14 | |||||
| Sr- toy 1 | 0 | 0 | 0 | 0 | |
| Sr- toy 1 | 742 | 124 | 133 | 12 | |
| Sr- toy 1 | 352 | 0 | 0 | 10 | |
| Seconds | |||||
| Sr- toy 1 | 286 | 1 | 0 | 0 | |
| Sr- toy 1 | 285 | 0 | 0 | 0 | |
| Sr- toy 2 | 2 | 284 | 0 | 0 | |
| Extinction | 54 | 32 | 47 | 41 | |
| Sr- toy 3/extinction (Sr- toy 3) | 2 | 0 | 300 | 0 | |
| Sr- toy 3/extinction (extinction) | 27 | 22 | 47 | 29 | |
| 15 | |||||
| Sr- toy 1 | 436 | 18 | 3 | 0 | |
| Sr- toy 1 | 334 | 0 | 0 | 0 | |
| Sr- toy 1 | 303 | 0 | 0 | 0 | |
| Sr- toy 2 | 12 | 304 | 0 | 8 | |
| Extinction | 51 | 32 | 27 | 25 | |
| Extinction | 20 | 18 | 15 | 0 | |
| Sr- toy 3/extinction (Sr- toy 3) | 7 | 4 | 300 | 0 | |
| Sr- toy 3/extinction (extinction) | 7 | 8 | 34 | 20 | |