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The human variant of the gene SRGAP2, SRGAP2C, enables greater dendritic spine density which fosters greater neural connections. [121] On a cellular level, studies demonstrate von Economo neurons (VENs) are more prevalent in humans than other primates. [122] Studies show that VENs are associated with empathy, social awareness and self-control ...
A false-belief test is a comprehensive test used to test for an individual's theory of mind. Understanding language is a key component to being able to understand the directions for the false-belief test, and researchers have had to get creative to utilize this test in the research of non-human primates' theory of mind.
A monkey drinking Frooti from a juice box using its hands. The mind and behavior of non-human animals has captivated the human imagination for centuries. Many writers, such as Descartes, have speculated about the presence or absence of the animal mind. [7]
As a part of The Ai Project, [3] some chimpanzees at Matsuzawa's lab at KUPRI were trained to play a game that involved memorizing a series of numerals that flash on the screen for a brief period of time, as well as their respective positions. The study found that the chimpanzees completed the task with a higher level of accuracy and speed than ...
The endocranial volume (the volume within the skull) is three times greater in humans than in the greatest nonhuman primate, reflecting a larger brain size. [70] The mean endocranial volume is 1,201 cubic centimeters in humans, 469 cm 3 in gorillas, 400 cm 3 in chimpanzees and 397 cm 3 in orangutans. [70]
Cortical thickness has also been found to correlate positively with intelligence in humans. [3] However, the rate of growth of cortical thickness is also related to intelligence. [ 31 ] In early childhood, cortical thickness displays a negative correlation with intelligence, while by late childhood this correlation has shifted to a positive one ...
Aegyptopithecus, a prehistoric monkey predating the split between apes and other Old World monkeys and the division of Old and New World monkeys, making it more closely related to humans than to New World monkeys. [170] Humans and other apes are Old World monkeys. The word monkey is often used colloquially to describe only those simians which ...
[2] [3] Within a short time, Kanzi had mastered the ten words that researchers had been struggling to teach his adoptive mother, and he has since learned more than 348, which he can also combine for new meaning. When he hears a spoken word (through headphones, to filter out nonverbal clues), he points to the correct lexigram.