Chimpanzees’ turn-taking
1
1
FIGURE CAPTIONS
2
Figure 1. Apparatus and setup. Schematic drawing shows overhead view of two
3
adjacent testing booths, equipped with vending machines which delivered food
4
rewards to the food box in the next booth when a token was inserted. All the walls
5
consisted of transparent panels.
6
Figure 4. Reaching by Pendesa (left) toward Mari through the hole. At the time this
7
photograph was taken, Pendesa had inserted five tokens consecutively prior to
8
this reaching behavior. After this scene, Mari resumed inserting tokens (two
9
tokens) in this case (see also Supplementary video 1).
Chimpanzees’ turn-taking
2
Chimpanzees’ turn-taking
Figure 4
3