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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 ...
After speculating about what enabled humans' ancestors to leave the rainforest (the use of roots as sources of water and food), Demonic Males next provides a catalog of the types of violence practiced by male chimpanzees (intragroup hierarchical violence, violence against females, and extragroup murdering raids). The high incidence of rape by ...
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.
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 ...
Their "reinterpretation hypothesis" explains away evidence supporting attribution of mental states to others in chimpanzees as merely evidence of risk-based learning; that is, the chimpanzees learn through experience that certain behaviors in other chimpanzees have a probability of leading to certain responses, without necessarily attributing ...
All social animals have societies in which each member knows its own place. [citation needed] Social order is maintained by certain rules of expected behavior and dominant group members enforce order through punishment. However, higher order primates also have a sense of reciprocity. Chimpanzees remember who did them favors and who did them wrong.
Great ape personhood is a movement to extend personhood and some legal protections to the non-human members of the great ape family: bonobos, chimpanzees, gorillas, and orangutans. [ 1 ] [ 2 ] [ 3 ] Advocates include primatologists Jane Goodall and Dawn Prince-Hughes , evolutionary biologist Richard Dawkins , philosophers Paola Cavalieri and ...
The chimpanzees in the area have little fear of humans, because of a local legend, that humans and bonobos were cousins. "According to this belief, an older brother in a family of bonobos held to their traditional lifestyle and his descendants thus remained in the forest as bonobos. However, his younger brother was tired of eating raw foods.