"At four or five months ... children enter the preoperational stage at around two years old Despite being over 70 years old, Piaget's theory is "still one of the prevailing theories in terms ...

Piaget found four major developmental stages (with many subdivisions). For the first year and a half or two years of life, infants are only aware of sensorimotor experience, and do not connect it ...

Piaget's theory of cognitive development is a comprehensive theory ... which he put out into testing. Within those four stages he managed to group them with different ages. Each stage he realized how ...

Psychologist Lawrence Kohlberg had the same questions, leading him to develop a theory of moral development that focuses on how children develop morality and ethical reasoning. This theory suggests ...

Jean Piaget's ideas about child development continue to influence pedagogical practices around the world. His pioneering work revolutionized our understanding of how children learn and think.