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October 24, 2012

Higher-math skills entwined with lower-order magnitude sense

The ability to learn complex, symbolic math is a uniquely human trait, but it is intricately connected to a primitive sense of magnitude that is shared by many animals.

“Our results clearly show that uniquely human branches of mathematics interface with an evolutionarily primitive general magnitude system. We were able to show how variations in both advanced arithmetic and geometry skills specifically correlated with variations in our intuitive sense of magnitude.”

Babies as young as six months can roughly distinguish between less and more, whether it’s for a number of objects, the size of objects, or the length of time they see the objects. This intuitive, non-verbal sense of magnitude, which may be innate, has also been demonstrated in non-human animals.

When given a choice between a group of five bananas or two bananas, for example, monkeys will tend to take the bigger bunch.

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