In addition to Chomsky's theory of Transformational grammar, other contemporary developments of structuralism included Kenneth Pike's theory of tagmemics, Sidney Lamb's theory of stratificational grammar, and Michael Silverstein's work.
2.
His master's degree in linguistics ( " A Comparative Study of Tagmemic and Stratificational Grammars ", 1966 ) and his doctorate in sociolinguistics ( " The Linguistic Development and Socialization of Italian-American Children in Boston s North End ", 1975 ) both were conferred by Georgetown University.