Apes understand that some things are all in your head. Duke Today, Oct. 6, 2016. We all know that the way someone sees the world, and the way it really is, aren’t always the same. This ability to recognize that someone’s beliefs may differ from reality has long been seen as unique to humans. But new research on chimpanzees, bonobos and orangutans suggests our primate relatives may also be able to tell when something is just in your head. Picked up by The New York Times, The Guardian, Science Magazine, the Los Angeles Times, the Washington Post, Huffington Post, The Independent, CBC, Cosmos, the Raleigh News & Observer and the Daily Mail.