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.

Chimpanzee experiments suggest early humans were likely fascinated by crystals because of their unique transparency and ...

Chimpanzees can change their minds when the facts no longer support their previous beliefs – a rational level of thinking that was once considered uniquely human. In a series of experiments designed ...

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 ...

The researchers were hoping to understand whether our own species' long documented appreciation (bordering on obsession) with ...

Chimpanzees consistently choose crystals over ordinary rocks, suggesting a curiosity that may echo early humans.

Researchers dubbed one experiment involving a roughly one-foot-tall crystal "The Monolith" in honor of Stanley Kubrick's iconic film 2001: A Space Odyssey. Aden Kahr Humans have long been fascinated ...

Luella and Winthrop Niles Kellogg believed they could use their own child in a chilling experiment involving a chimpanzee. Little Donald Kellogg was just 10 months old when he became one of the ...

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, ...

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 ...