Set-up of experiment 2. The tool giver was placed in enclosure 3 (middle), whereas the tool recipient was placed in enclosure 4 (right). The illustration depicts the configuration in which the social and nonsocial apparatuses for both individuals were baited with high-value rewards.
Far too long in the making.. but finally out in #AnimalBehaviour @asab.org:
Orang-utans and chimpanzees #cooperate strategically based on the partner’s incentives.
doi.org/10.1016/j.an...
w/ @elisafelsche.bsky.social , Josep Call & @federicorossano.bsky.social