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Bonobos know when you don't: Ape ignorance attribution
1Department of Psychology & Program in Animal Behavior, Bucknell University, One Dent Drive, Lewisburg, PA, 17837, USA. n.schwob@bucknell.edu.
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Townrow and Krupenye (PNAS, 122(6), Article e2412450122, 2025) found that bonobos understand the mental states of others and can attribute ignorance to a social partner. In an elegantly simple design, the authors found bonobos to communicate more often, and more quickly, when a social partner is ignorant, rather than knowledgeable, of the location of a hidden food item.
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