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Total number of trials in which the dogs either approached or did not approach the boxes, grouped by model identity and responsibility.
| Model | Approach | Responsibility shared | Responsibility not shared | Total |
|---|---|---|---|---|
| 1st familiar human | yes | 7 | 12 | 19 |
| no | 4 | 1 | 5 | |
| 2nd familiar human | yes | 9 | 9 | 18 |
| no | 2 | 4 | 6 | |
| Unfamiliar experimenter | yes | 6 | 6 | 12 |
| no | 5 | 7 | 12 |
