Some cultures are fixated on numbers. Others don’t even have words for numbers. And then there’s Bolivia’s Indigenous Tsimane’ community, which has members who can count indefinitely, and others who ...

Researchers at the University of Tübingen in Germany have new evidence suggesting crows can contemplate the number zero. This ability means the birds join an “elite” group of creatures that can ...

It has been assumed, on historical and psychological grounds, that the concept of irrational numbers faces two major intuitive obstacles: a) the difficulty to accept that two magnitudes (two line ...

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A study was conducted to investigate the effect on concept difficulty of: a.) the number of defining attributes, and b.) the level of conceptualization (LC) of the concepts' attributes. One hundred ...