RESTATEMENT SUMMARY
People have under-estimated the intelligence of chimpanzees.
Photographic memory tests have shown that 5 year old chimps have a better memory than their mothers or university students.
This research was described as "ground-breaking". It has shown the effect of evolution on memory skills of humans.
You can find more about it here http://news.bbc.co.uk/2/hi/science/nature/7124156.stm
