Chimpanzees appear to execute Rational Evidence-Weighing in complex decision-making tasks. The experiments conducted demonstrated that chimps changed their minds when presented with stronger evidence.

New research on chimpanzees is forcing scientists to rethink where the line between human and animal minds really lies. In carefully designed experiments, chimps are not just grabbing at treats or ...

Chimps’ love for crystals could help explain our ancestors’ fascination with the shiny stones. The forerunners of modern humans collected crystals for which they had no apparent use, say scientists.

And chimps outperform humans. I once watched Matsuzawa show videos of his experiments with Ai and Ayumu at a conference attended by the world’s leading chimp researchers, including Jane Goodall, ...

The crystal chimp study, published in the journal Frontiers in Psychology, was an attempt to understand what about the shimmering minerals is so attractive to the apes’ closest cousins, us. It was led ...

Chimpanzees and people already share much when it comes to our evolutionary history, and the latest research shows we have a similar appreciation for fairness as well. A study published in the ...

A recent study performed on chimpanzees demonstrates that chimpanzees possess cognitive flexibility similar to that of humans. When circumstances or evidence change, chimps appear to do the thing ...

When caretakers tried to retrieve the crystal from the chimps’ enclosure, they had to exchange it for favoured snacks of bananas and yoghurt. A second experiment showed that the chimps could identify ...