La construction du réel chez l’enfant

This second volume of his trilogy on the cognitive development of babies, is based on the same collection of data obtained with his wife Valentine, from the observation of their children. Piaget follows step by step the genesis of the notion of object, cause, time and space. The book highlights the existence of a specific and systematic sensory-motor knowledge that precedes language and constitutes the schematic basis on which concepts and notions are subsequently built.