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BBC NEWS | Science/Nature | Chimps beat humans in memory test
Dr Matsuzawa and colleagues tested three pairs of mother and baby chimpanzees against university students in a memory task involving numbers.
Human subject (Image: Matsuzawa/Current Biology)
Human v Chimp
The mothers and their five-year-old offspring had already been taught to "count" from one to nine.
During the experiment, each subject was presented with various numerals from one to nine on a touch screen monitor.
The numbers were then replaced with blank squares and the test subject had to remember which number appeared in which location, then touch the appropriate square.
They found that, in general, the young chimps performed better than their mothers and the adult humans.
The university students were slower than all of the three young chimpanzees in their response.
The researchers then varied the amount of time that the numbers appeared on-screen to compare the working memory of humans and chimps.
Chimps performed much better than university students in speed and accuracy when the numbers appeared only briefly on screen.
The shortest time duration, 210 milliseconds, did not leave enough time for the subjects to explore the screen by eye movement - something we do all the time when we read.
This is evidence, the researchers believe, that young chimps have a photographic memory which allows them to memorise a complex scene or pattern at a glance. This is sometimes present in human children but declines with age, they say.
"Young chimpanzees have a better memory than human adults," Dr Matsuzawa told BBC News.
"We are still underestimating the intellectual capability of chimpanzees, our evolutionary neighbours."
Dr Matsuzawa and colleagues tested three pairs of mother and baby chimpanzees against university students in a memory task involving numbers.
Human subject (Image: Matsuzawa/Current Biology)
Human v Chimp
The mothers and their five-year-old offspring had already been taught to "count" from one to nine.
During the experiment, each subject was presented with various numerals from one to nine on a touch screen monitor.
The numbers were then replaced with blank squares and the test subject had to remember which number appeared in which location, then touch the appropriate square.
They found that, in general, the young chimps performed better than their mothers and the adult humans.
The university students were slower than all of the three young chimpanzees in their response.
The researchers then varied the amount of time that the numbers appeared on-screen to compare the working memory of humans and chimps.
Chimps performed much better than university students in speed and accuracy when the numbers appeared only briefly on screen.
The shortest time duration, 210 milliseconds, did not leave enough time for the subjects to explore the screen by eye movement - something we do all the time when we read.
This is evidence, the researchers believe, that young chimps have a photographic memory which allows them to memorise a complex scene or pattern at a glance. This is sometimes present in human children but declines with age, they say.
"Young chimpanzees have a better memory than human adults," Dr Matsuzawa told BBC News.
"We are still underestimating the intellectual capability of chimpanzees, our evolutionary neighbours."
