This document reviews a number of recent studies written in French that investigate the nature of communication between 2-year-old infants and others. The review includes three parts. The first part focuses on studies aiming to constitute a behavioral catalog of the child. Characteristically, these studies offer a posteriori interpretations of…

Research literature on childrens' causal understanding in oral and written settings is reviewed. Results show that maturation and task complexity both influence childrens' causal understanding. However, the findings are contradictory, and no generalizations could be made about which factors influence causal understanding and at which ages they are…

In all of his published work, Jean Piaget never abandoned his original theoretical framework for the understanding of human development. This framework insists that intelligence is essentially a biological phenomenon; its development is best understood as the development of a sophisticated and highly successful adaptation device. This device…