Jean Piaget's ideas about child development ... This conviction led Piaget to develop his influential theory of cognitive development. He proposed that children pass through four main stages ...

His work modified and expanded upon Jean Piaget's previous work but was more centered on explaining how children develop moral reasoning. Kohlberg extended Piaget's theory, proposing that moral ...

Jean Piaget (1896-1980 ... and abstractions like justice. Piaget is widely recognized as the greatest developmental psychologist of the century. His ideas have been refined and added to, but ...

But it isn't without its limitations, the biggest being that, according to Sam, it's "quite culturally biased" as Piaget based his theory on observations of his own daughter and nephew and is ...