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Young chimpanzees scored better results than humans in a memory recall test, a group of researchers of Kyoto University's Primate Research Institute has found. The Yomiuri Shimbun reports that the test involved recalling the locations of groups of numbers flashed onto a computer screen.

The researchers led by Tetsuro Matsuzawa also found that young chimps, who were trained over six months with their mothers to recognise numbers on a computer display, performed better than mature chimps. Their findings appeared in the US magazine Current Biology.

Ayumu, a male chimpanzee, was the most successful, correctly locating nine numbers which were flashed onto the computer screen for 0.7 second. Nine university students who were pitted against the chimps failed to locate the numbers correctly. Matsuzawa speculated that humans might have lost this kind of short-term memory recall to make room for other information – such as language – as a result of evolutionary processes or aging.

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