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A 2012 study identifying individual chimpanzees that consistently performed highly on cognitive tasks found clusters of abilities instead of a general factor of intelligence. [48] This study used individual-based data and claim that their results are not directly comparable to previous studies using group data that have found evidence for g.
Chimpanzees lack the prominent sagittal crest and associated head and neck musculature of gorillas. [14] [41] Chimpanzee hand (left) compared to human hand. Chimpanzee bodies are covered by coarse hair, except for the face, fingers, toes, palms of the hands, and soles of the feet. Chimpanzees lose more hair as they age and develop bald spots.
Matsuzawa, whose research focuses on chimpanzee intelligence, suggests the tradeoff hypothesis as a possible explanation as to why chimpanzees have better memory than humans for immediately capturing and retaining visual stimuli in his paper "Symbolic representation of number in chimpanzees". [1]
Chimpanzee: 2.8 × 10 ^ 10 [56] Orangutan ... Proxies for animal intelligence have varied over the centuries. One early suggestion was brain size (or weight, which ...
Group of chimpanzees. In primatology, the Machiavellian intelligence or social brain hypothesis describes the capacity of primates to manuever in complex social groups. [1] [2] The first introduction of this concept came from Frans de Waal's book Chimpanzee Politics (1982). In the book de Waal notes that chimpanzees performed certain social ...
The great apes (Hominidae) show some cognitive and empathic abilities. Chimpanzees can make tools and use them to acquire foods and for social displays; they have mildly complex hunting strategies requiring cooperation, influence and rank; they are status conscious, manipulative and capable of deception; they can learn to use symbols and understand aspects of human language including some ...
Until Pepperberg began this research in the 1970s, few scientists had studied intelligence in parrots, and few do today. Most inquiries have instead focused on monkeys, chimpanzees, gorillas, and dolphins, all of which are much more difficult to raise, feed, and handle. [88]
Robert Mearns Yerkes (/ ˈ j ɜːr k iː z /; May 26, 1876 – February 3, 1956) was an American psychologist, ethologist, eugenicist and primatologist best known for his work in intelligence testing and in the field of comparative psychology.