To begin with, of all the parts of the body, the brain grows most during early childhood, making for dramatic changes in cognitive development. Children’s memory, for instance, greatly advances after infancy. Young children can remember large amounts of information!
Second, children learn to convey thoughts and ideas relating to their everyday lives by using words and images. Psychologist Jean Piaget best illustrates what children understand and fail to understand at this stage. Children can’t distinguish their perspectives from others. But most psychologists realize that all people can have false beliefs by the age of five.