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Prediction of Prey Trajectory by Chimpanzees- a Virtual Reality Task

We are interested in whether chimpanzees can predict the trajectory of fast-moving prey in order to intercept it in a virtual environment. In the wild, chimpanzees sometimes work together to hunt prey that is too fast to catch by merely chasing after it. An important component of this cooperative hunting behaviour may be the ability to predict where the prey is going and when it is likely to get there, and then intercept it. To test whether chimpanzees can do this, we present them with a virtual scenario in which they receive a fruit reward for catching an antelope. The chimpanzees can navigate the virtual environment by touching locations on a touchscreen to turn and move. The antelope runs a straight path from left to right (or right to left) in front of the chimpanzee, but it moves too fast for the chimpanzee to catch it by following its path – the chimpanzee must instead anticipate where the antelope is going, and intercept it. Part of the antelope’s path is sometimes hidden by a high wall, which means the chimpanzee must predict the antelope’s future location (i.e., that it will emerge at the end of the wall) without knowing its current location. The chimpanzees have experience collecting stationary targets (virtual fruit) and moving prey (virtual rabbits), but this is their first time attempting to catch prey that can’t just be chased down. This study is also being conducted with bonobos (close ape relatives of chimpanzees and humans) at the Ape Cognition and Conservation Initiative in Iowa, USA.


https://youtu.be/RmkYHZQaec4

Dr Sarah Koopman & Emilie Rapport Munro