![]() “That is a really important human skill that has never been shown before in apes.” ![]() “They can anticipate that an individual will search for an object where they last saw it, even though the apes know that it’s no longer there,” Krupenye says. In these, King Kong briefly hides in the other haystack after the person leaves before dashing away, or transfers the stone to the other box without a person watching. To test that the apes weren’t just looking at the last place where they saw an object or character, the researchers filmed different versions of the videos. When the person returns to look for the stone, about three-quarters of apes that paid attention to the boxes glanced first at the one that the human should open. The scientists also tested the apes with a similar scenario, in which the King Kong character hides a stone in one of two boxes as a person watches, but then steals it when they leave. Of the 30 apes that focused on the haystacks, two-thirds looked first at the one where the human falsely believed the character was hiding. The researchers used a camera to track the eyes of 40 apes, including chimpanzees, bonobos and orangutans. ![]() The person then reappears, apparently looking for the attacker.īecause humans and other animals will look at a location where they anticipate action, the haystack that the apes glanced at first when they watched the video might indicate the one they expected the human to approach. ![]() After the human leaves the scene, “King Kong” exits the haystack and runs off screen. In one video, the fake ape hits a person, and then hides in one of two haystacks while the person watches. ![]()
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