Avram Noam Chomsky is an American linguist, philosopher, cognitive scientist, historian, social critic, and political activist. Sometimes called “the father of modern linguistics”, Chomsky is also a major figure in analytic philosophy and one of the founders of the field of cognitive science

In the 1960s, linguist Noam Chomsky proposed a revolutionary idea: We are all born with an innate knowledge of grammar that serves as the basis for all language acquisition. In other words, for humans, language is a basic instinct. The theory, however, has long been met with widespread criticism 

Contribution to Psychology Chomsky is best known for his influence on linguistics, specifically, the development of transformational grammar. Chomsky believed that formal grammar was directly responsible for a person’s ability to understand and interpret mere utterances.

Thesis: transformational Analysis (1955)