Jean Piaget (1896-1980) was a Swiss developmental psychologist and philosopher best known for his pioneering work in the study of child development and his theory of cognitive development.  He studied natural sciences at the University of Neuchâtel and later obtained a Ph.D. in zoology. However, his professional trajectory shifted when he began working at the Binet Institute in Paris, where he was tasked with standardizing intelligence tests for children. Through his observations, Piaget became intrigued by the systematic errors made by children, leading him to hypothesize that children think differently than adults. This marked the beginning of his extensive research into the nature and development of human intelligence.

Intelligence is not a static trait but can be modified under the right educational interventions.

Repetitio mater studiorum.