<span>It best illustrates Piaget's concept of Schema
.According to Piaget, A schema refers to a pattern or representation that people held when we try to understand everything around us.The existence of schema indicates that the children already develop a certain level of cognitive ability, even though it's still imperfect.</span>
The technique of developmental research which requires significant expenditure of time is called Longitudinal Studies.
Longitudial studies access changes by studying the same group of subjects over an extended period of time - for months or even years. This form of research provides valuable information, but many factors can occur over time, like relocation or illness.
Lyman Hall was the signer that also practiced medicine
