Study suggests that chimpanzees may have the ability to accumulate cultural evolution, a trait previously thought to be unique to humans. The study was published in Springer Nature's professional academic journal "Nature - Human Behavior" The authors concluded that the elements of skills required to complete puzzle box design tasks may vary between individuals, and future follow-up studies suggest the need to use different techniques to test the range of chimpanzee cognitive and repetitive abilities.

(over)   China News Service, Beijing, March 7.