Japanese researchers pitted young chimps against human adults in tests of short-term memory, and overall, the chimps won.That challenges the belief of many people, including many scientists, that "humans are superior to chimpanzees in all cognitive functions," said researcher Tetsuro Matsuzawa of Kyoto University.
"No one can imagine that chimpanzees, young chimpanzees at the age of 5 , have a better performance in a memory task than humans," he said in a statement.
What's going on here? Even with six months of training, three students failed to catch up to the three young chimps, Matsuzawa said in an e-mail.
He thinks two factors gave his chimps the edge. For one thing, he believes human ancestors gave up much of this skill over evolutionary time to make room in the brain for gaining language abilities.
The other factor is the youth of Ayumu and his peers. The memory for images that's needed for the tests resembles a skill found in children, but which dissipates with age.
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