Behavioural studies have revealed that the processing and representation of numerical magnitude are qualitatively similar across species and across human development. Reliable effects such as the ...

A recent article in the scientific journal Nature reports on the discovery of what appears to be a clamshell bearing intentionally produced geometric engravings dating to approximately half a million ...

From paintings and photographs to coins and credit cards, we are constantly surrounded by symbolic artifacts. The mental representation of symbols -- objects that arbitrarily represent other objects - ...