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For instance, chimpanzees (Pan troglodytes) have patrilineal social systems, where the males usually remain in their natal groups and the females emigrate into neighboring groups. Conversely, in the matrilineal societies of bonobos (Pan paniscus), it is the females who remain in their natal groups and the males who disperse to new groups ...
Bonobo chimpanzee society on the other hand is governed by alpha females. Males will associate with females for rank acquisition because females dominate the social environment. If a male is to achieve alpha status in a bonobo group, he must be accepted by the alpha female. [10] Female bonobos will interact sexually to increase social status.
Franciscus Bernardus Maria de Waal (29 October 1948 – 14 March 2024) was a Dutch-American primatologist and ethologist.He was the Charles Howard Candler Professor of Primate Behavior in the Department of Psychology at Emory University in Atlanta, Georgia, director of the Living Links Center at the Yerkes National Primate Research Center at Emory, [1] and author of numerous books including ...
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Chimpanzee and bonobo males A comparison of chimpanzees' and bonobos' performance on various cognitive tests [143] In 2020, the first whole-genome comparison between chimpanzees and bonobos was published and showed genomic aspects that may underlie or have resulted from their divergence and behavioral differences , including selection for genes ...
Bonobos (Pan paniscus) are social animals that live in hierarchical structures, though not as hierarchical as chimpanzees. [115] Researchers Bräuer, Call, and Tomasello tested bonobos, together with other great apes , twice and twice failed to find evidence of inequity aversion.
Yerkes was a pioneer in the study both of human and primate intelligence and of the social behavior of gorillas and chimpanzees. Along with John D. Dodson, Yerkes developed the Yerkes–Dodson law relating arousal to performance. As time went on, Yerkes began to propagate his support for eugenics in the 1910s and 1920s.
Much of the early work on ToM in animals focused on the understanding chimpanzees have of human knowledge. The term "theory of mind" was originally proposed by Premack and Woodruff in 1978. [2] [5] Early studies focused almost entirely on studying if chimpanzees could understand the knowledge of humans. This approach turned out not to be ...