Whose theory of development is best exemplified by the idea that children construct their own knowledge and that this constructed knowledge changes with age/experience?

Jean Piaget

Explanation:

Jean Piaget was the most influential figure in the field of psychology in the twentieth century. His theory is based on how children construct knowledge of the world around them. He explained the process of cognitive development is based on biological maturation and interaction with the environment. He explained how the process of adaptation and assimilation in understanding the nature of intelligence.