About the Authors

Véronique Izard

To whom correspondence should be addressed. E-mail: veronique.izard@m4x.org

Affiliations INSERM, U562, Cognitive Neuroimaging Unit, F-91191 Gif/Yvette, France , CEA, DSV/I2BM, NeuroSpin Center, Gif/Yvette, France , Université Paris-Sud, Orsay, France , Laboratory for Developmental Studies, Harvard University, Cambridge, Massachusetts, United States of America

Ghislaine Dehaene-Lambertz

Affiliations INSERM, U562, Cognitive Neuroimaging Unit, F-91191 Gif/Yvette, France , CEA, DSV/I2BM, NeuroSpin Center, Gif/Yvette, France , Université Paris-Sud, Orsay, France , AP-HP, Service de Neurologie Pédiatrique, Hôpital Bicêtre, Kremlin Bicêtre, France

Stanislas Dehaene

Affiliations INSERM, U562, Cognitive Neuroimaging Unit, F-91191 Gif/Yvette, France , CEA, DSV/I2BM, NeuroSpin Center, Gif/Yvette, France , Université Paris-Sud, Orsay, France , Collège de France, Paris, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

VI, GDL, and SD conceived and designed the experiments, analyzed the data, contributed reagents/materials/analysis tools, and wrote the paper. VI performed the experiments.