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Distribution of consistency in hand preference between species.
| Pongo | Gorilla | Chimpanzee | Bonobo | |
|---|---|---|---|---|
| Handedness score | ||||
| LL | 3 | 4 | 40 | 7 |
| AL | 9 | 3 | 56 | 12 |
| AA or RL | 16 | 12 | 94 | 20 |
| AR | 8 | 27 | 79 | 17 |
| RR | 4 | 11 | 78 | 14 |
LL, prefer left hand for both task; RR, prefer right hand for both tasks; RL, prefer opposite hands for the two tasks; AR, prefer right hand for one task, no preference for the other; AL, prefer left hand for one task and no preference for the other; AA, no hand preference for either task.
