By the age of three children use syntactically correct sentences.
By the age of five they use highly complex constructions
It is now assumed that child’s language reflects their concepts and it develops as their concepts expand
It is impossible to determine the number of sentence constructions that can be generated within a single language.
By the age of three children, however, use syntactically correct sentences.
And by the age of five they use highly complex constructions.
The mental system does not require formal learning and will function perfectly, when language is available to the child. Chomsky
Piaget was one of the theorists, concerned with the relationship between cognitive growth and language.
As a child psychologist, Piaget was mostly interested in the cognitive development of children.
It is now assumed that child’s language reflects their concepts and it develops as their concepts expand