Table 1.
The two training sets of nonsense words presented to both humans and budgerigars
| Training set 1 | Training set 2 | ||
|---|---|---|---|
| Syllable 1 | Syllable 2 | Syllable 1 | Syllable 2 |
| pu | vo | to | su |
| pu | ga | to | mi |
| zi | pu | ji | to |
| ga | pu | su | de |
| na | ke | de | ji |
| na | vo | de | lu |
| ke | na | ji | mi |
| ga | zi | lu | to |
| zi | ga | su | lu |
| ke | zi | mi | ji |
| vo | na | lu | su |
| vo | ke | mi | de |
Each nonsense word was made up of two syllables and each syllable was only used in one of the two training sets, not both, and each syllable occurred as the first stimulus in two nonsense words, and as the second stimulus in two nonsense words