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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]
Matsuzawa is known for his research on chimpanzee intelligence both in the laboratory and in the wild. His laboratory work consists of the Ai-project, which focuses on the language-like skills, number-concepts, and memory ability of a female chimpanzee named Ai. Started in 1978, it is one of the longest running laboratory research projects on ...
He is the son of chimpanzee Ai and has been a participant since infancy in the Ai Project, an ongoing research effort aimed at understanding chimpanzee cognition. [2] As part of the Ai Project, Ayumu participated in a series of short-term memory tasks, such as to remember the sequential order of numbers [ 3 ] displaying on a touch-sensitive ...
The chimpanzee Böbe painting in 1967. Primate cognition is the study of the intellectual and behavioral skills of non-human primates, particularly in the fields of psychology, behavioral biology, primatology, and anthropology. [1]
Researchers have studied Ai’s memory, number-learning, and perception of color. Matsuzawa wrote that Ai was “the first chimpanzee who learned to use Arabic numerals to represent numbers,” and her ordering of different shades and hues of Munsell color chips was similar to human orderings. [2]
To test this alternative, an additional condition is introduced in which the volume of the apple varies and is occasionally smaller in the condition with a greater number of pieces. If the animal prefers a bigger number of pieces also in this condition, the alternative explanation is rejected, and the claim of numerical ability supported.
Fortrea primate-testing lab, Vienna, Virginia, 2004–05. Most of the NHPs used are one of three species of macaques, accounting for 79% of all primates used in research in the UK, and 63% of all federally funded research grants for projects using primates in the U.S. [25] Lesser numbers of marmosets, tamarins, spider monkeys, owl monkeys, vervet monkeys, squirrel monkeys, and baboons are used ...
Dunbar's number has become of interest in anthropology, evolutionary psychology, [12] statistics, and business management.For example, developers of social software are interested in it, as they need to know the size of social networks their software needs to take into account; and in the modern military, operational psychologists seek such data to support or refute policies related to ...