Laboratory for the Psychology

of Child Development

and Education

Marie Létang

After obtaining a bachelor in Psychology (Caen - 2015), then a Master of Psychology of cognitive and social development of children and adolescents in 2017 at Paris Descartes University, Marie started a PhD at LaPsyDé in October 2017, under the supervision of Professor Olivier Houdé. Receiving a CIFRE scholarship from Editions Nathan, and more specifically from the pedagogical network (, her research project aims to offer educational tools to primary school teachers, in order to allow them to identify their pupils’ inhibition defect in school situations, and to remedy this by applying inhibition training protocols.


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Rossi, S., Vidal, J., Létang, M., Houdé, O. & Borst, G. (2019). Adolescents and adults need inhibitory control to compare fractions. Journal of Numerical Cognition, 5(3), 314-336.