New Delhi, Oct 31 (PTI) Chimpanzees might be rational thinkers, capable of changing minds when presented with new information, a new study has found.

Findings published in the journal 'Science' challenge the traditional view that rationality -- the ability to form and revise beliefs based on the strength of available evidence -- is exclusive to humans, said researchers, including those from the University of California, Berkeley, in the US.

The team presented chimpanzees in the Ngamba Island Chimpanzee Sanctuary in Uganda with two boxes, one containing food.

The animals initially received a clue suggesting which box held the reward. They were later presented with stronger evidence that would point to the other box.

"Chimpanzees were able to revise their beliefs when better evidence bec

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