Jean Piaget:
Piaget focused on cognitive development in general, suggesting that language acquisition happens as part of a child's broader intellectual growth.
He believed that children learn language through interaction with their environment, and that cognitive maturity is needed for language development.
Noam Chomsky:
Chomsky proposed that humans have an innate ability for language, supported by a Language Acquisition Device (LAD).
He argued that language acquisition is not learned solely from the environment but is guided by universal grammar, a set of principles shared by all languages.
In summary, Piaget linked language to overall cognitive development, while Chomsky argued that language learning is driven by innate cognitive structures.