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Great apes know when people are wrong: study
by Staff Writers
Miami (AFP) April 5, 2017


Orangutans, chimpanzees and bonobos are the nearest relatives of humans in the primate world, and like us, they can tell when a person is wrong in their beliefs, researchers said Wednesday.

Great apes were also willing to help a person who was mistaken about the location of an object, according to the study in the journal PLOS ONE.

"This study shows for the first time that great apes can use an understanding of false beliefs to help others appropriately," said by David Buttelmann from Max Planck Institute for Evolutionary Anthropology, Germany.

Researchers used a test developed for human babies, about 18 months of age, to determine if they could understand when a person held a false belief -- a mark of advanced social cognition.

A person would place an object on one of two boxes, while a great ape looked on.

For some of the tests, the original person would step away, while another person took the object out of the box and put it into another box.

When the original person came back, they tried to open the first box, where they believed the object to be, not realizing it had been moved.

This was known as the "false-belief" portion of the study. For other parts, the person stayed in the room and could see when the object was moved.

A total of 34 great apes -- chimpanzees, bonobos and orangutans -- took part in the research at the Leipzig Zoo in Germany.

In the false belief portion, the apes chose the correct box significantly more often than chance.

Researchers also discovered that great apes, like human infants, "were more likely to help the person find the object when he had a false belief about which box the object was in," said the report.

Until now, researchers believed great apes did not have this capacity to understand the intent of people, or to "read minds," so to speak.

"Apes are able to use this understanding in their social interactions," concluded the study.

"If supported by further research, the apparent difference between great ape and human social cognition would thus lie not in their basic capacity to 'read' other minds, but elsewhere."

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Researchers uncover prehistoric art and ornaments from Indonesian 'Ice Age'
Brisbane, Australia (SPX) Apr 04, 2017
The Australian Research Centre for Human Evolution (ARCHE) team, based in Griffith's Environmental Futures Research Institute, together with Indonesian colleagues, have shed new light on 'Ice Age' human culture and symbolism in a paper published this week in Proceedings of the National Academy of Sciences (PNAS). The study was co-led by Associate Professor Adam Brumm, an Australian Researc ... read more

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