Humans make decisions using statistical information every day. Imagine you’re selecting a packet of jellybeans. If you prefer red jellybeans, you will probably try to find a packet that shows the most ...

For decades, the consensus was that as young children begin reasoning about the biological world, they adopt an "anthropocentric" stance, favoring humans over non-human animals when it comes to ...

There is an emerging consensus among scientists that animals share functional parallels with humans' conscious metacognition -- that is, our ability to reflect on our own mental processes and guide ...

Advertising experts know that if you repeat a message often enough, people will believe it, regardless of whether it’s truthful or not. Repetition, we’re told, is much more important than accuracy.

Freddy Jackson Brown and Nic Hooper say chimps can't do relational reasoning (3 June, p 38), and artificial intelligence struggles with it (17 June p 12). It is probably the basis for human language.