Table 1. Scent identification matching procedures performed by one dog.
Dog ID | Type of twins | Matching procedure (in random order) | Number of line-ups | Correct results (n) | Incorrect results (n) |
Gabi | Monozygotic twins | 1A×1A | 5 | 1 | 0 |
1A×1B | 5 | 1 | 0 | ||
1B×1B | 5 | 1 | 0 | ||
2A×2A | 5 | 1 | 0 | ||
2A×2B | 5 | 1 | 0 | ||
2B×2B | 5 | 1 | 0 | ||
Dizygotic twins | 3A×3A | 5 | 1 | 0 | |
3A×3B | 5 | 1 | 0 | ||
3B×3B | 5 | 1 | 0 | ||
4A×4A | 5 | 1 | 0 | ||
4A×4B | 5 | 1 | 0 | ||
4B×4B | 5 | 1 | 0 | ||
Total: | 60 | 12 | 0 |
As all dogs used in the experiment performed in exactly the same way, with no incorrect alerts, performance of other dogs are not shown.