Claim: Noam Chomsky is completely disassociated from the creation of the generative grammar theory.
Evidence: From 1951 to 1955 he was appointed to Harvard University 's Society of Fellows , where he developed the theory of transformational grammar for which he was awarded his doctorate in 1955.
Transformational grammar -LRB- TG -RRB- or transformational-generative grammar -LRB- TGG -RRB- is , in the study of linguistics , part of the theory of generative grammar , especially of naturally evolved languages , that considers grammar to be a system of rules that generate exactly those combinations of words which form grammatical sentences in a given language.