Which psychologist is known for developing key stages of cognitive development in children?

Jean Piaget is recognized for his pioneering work on cognitive development in children. He proposed a theory outlining how children's thinking evolves through distinct stages as they grow. Piaget identified four main stages: the sensorimotor stage, the preoperational stage, the concrete operational stage, and the formal operational stage. Each stage represents different capabilities in cognitive processes, including how children perceive and interact with the world around them.

His emphasis on the active role of children in constructing their understanding, rather than being passive recipients of knowledge, was groundbreaking. This developmental framework has had a significant influence on education, child psychology, and our overall understanding of cognitive development in early life. Piaget’s work remains foundational in the field, shaping both theoretical perspectives and practical applications in educational settings.