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Selected publications

Dillon, M. R., Izard, V., & Spelke, E. S. 2020. Infants’ sensitivity to shape changes in 2D visual forms. Infancy, 25(5), 618-639.

Dillon, M. R., Duyck, M., Dehaene, S., Amalric, M., & Izard, V. 2019. Geometric categories in cognition. Journal of Experimental Psychology: Human Perception and Performance, 45(9), 12367."

Izard V., Streri A., Spelke E.S., 2014. Towards Exact Numbers : Understanding Exact Equality, Cognitive Psychology, 72, 27-53.

Izard V., Pica P., Spelke E.S., Dehaene S., 2011. Flexible Euclidean Intuitions in an Amazonian Indigene Group, PNAS, 108(24), 9782-9787.

Izard V., Sann C., Spelke E.S., Streri A., 2009. Newborn Infants Represent Abstract Numbers, PNAS, 106(25): 10382:10385.


Our perceptual system permanently encodes numerical and geometric information from the surrounding world. These intuitions, present from an early age, may serve as a basis for the acquisition of mathematical knowledge. However, primitive intuitions remain limited, and therefore do not entirely explain how we learn the simplest mathematical concepts, such as natural integers and Euclidean geometry.