Cool:
In as study due to be published tomorrow in Current Biology, Matsuzawa showed a computer screen grid of nine numbers to six chimpanzees, all trained to recognize the ascending nature of arabic numberals, and nine college students. When subjects touched one number, the others disappeared. Then they had to touch the squares in the order of the numbers that used to be there.
When the original numbers remained on-screen for seven-tenths of a second, the college kids fared as well as Ayumu, the most prodigious of the chimps. Both had a success rate of 80 percent. But when the numbers flashed for just four-tenths of a second or less, Ayumu's success rate stayed the same, while the others plummeted to 40 percent. Even with six months of training, three students still couldn't beat Ayumu.
"It's amazing what this chimpanzee is able to do," chimpanzee researcher Elizabeth Lonsdorf told the Associated Press. "I just watched the video of that and I can tell you right now, there's no way I can do it. It's unbelievable. I can't even get the first two (squares)."
“There are still many people, including many biologists, who believe that humans are superior to chimpanzees in all cognitive functions,” said Matsuzawa in a press release. “No one can imagine that chimpanzees—young chimpanzees at the age of five—have a better performance in a memory task than humans. Here we show for the first time that young chimpanzees have an extraordinary working memory capability for numerical recollection—better than that of human adults tested in the same apparatus, following the same procedure.” Matsuzawa likens the phenomenon to eidetic -- photographic -- memory.
http://blog.wired.com/wiredscience/2007/12...ou-smarter.html
