What Are Orangutans Thinking? | Smithsonian’s National Zoo and Conservation Biology Institute https://nationalzoo.si.edu/animals/news/what-are-orangutans-thinking
Let’s play a game…for science! With a tap of the touch-screen computer, orangutans at the Smithsonian’s National Zoo try their memories at matching pictures. These games help scientists study the apes’ metacognition.
For example, orangutans have to try to remember where food is located.