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Tool making is much rarer, but has been documented in orangutans, [31] bonobos and bearded capuchin monkeys. Research in 2007 shows that chimpanzees in the Fongoli savannah sharpen sticks to use as spears when hunting, considered the first evidence of systematic use of weapons in a species other than humans.
In a multi-species study, it was shown that chimpanzees, bonobos and orangutans passed the False Belief Test (see above). [ 25 ] In 2009, a summary of the ToM research, particularly emphasising an extensive comparison of humans, chimpanzees and orang-utans, [ 28 ] concluded that great apes do not exhibit understanding of human referential ...
The second list shows the number of neurons in the structure that has been found to be representative of animal intelligence. [1] ... Chimpanzee: 2.8 × 10 ^ 10 [56 ...
Anne E. Russon is a Canadian psychologist and primatologist. She is a researcher and Professor of Psychology at Glendon College, York University, Toronto, Ontario, Canada whose research focuses on learning and intelligence in ex-captive Bornean orangutans. [1]
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]
Facial expressions can be used to convey a message. Great ape language research historically involved attempts to teach chimpanzees, bonobos, gorillas and orangutans to communicate using imitative human speech, sign language, physical tokens and computerized lexigrams.
These countries have ruled that chimpanzees, bonobos, gorillas and orangutans are so cognitively similar to humans that using them as test subjects is unethical. [2] [3] Austria is the only country in the world to have completely banned experiments on all apes, including both the great apes and the lesser apes, commonly known as gibbons. [4]
Started in 1978, it is one of the longest running laboratory research projects on chimpanzee intelligence. Matsuzawa has been a part of the project since the beginning. Matsuzawa has also studied tool use in the wild chimpanzees at Bossou, Guinea, West Africa since 1986. The bossou chimpanzee community consists of about 12 individuals and has ...