Who is known for developing the stages of cognitive development?

Jean Piaget is renowned for developing the theory of cognitive development, which outlines how children progress through distinct stages of cognitive growth. His theory describes four key stages: the sensorimotor, preoperational, concrete operational, and formal operational stages. Each of these stages represents a different way of thinking and understanding the world, highlighting examples of cognitive development as children interact with their environment and gain knowledge.

Piaget's work emphasized that children are active learners who create their own understanding through exploration and experience, making significant contributions to educational practices and understanding child psychology. His insights have profoundly influenced how developmental psychology and education approaches childhood learning and cognitive growth.