Among these, Jean Berko Gleason's Wug test debuted in " WORD " in 1958 " The Child's Learning of English Morphology " ( Volume 14, 1958 ); Charles Ferguson's " Diglossia " was published in " WORD " ( Volume 15, 1959 ); M . A . K . Halliday's first journal paper on Systemic-Functional Linguistics " Categories of the theory of grammar " appeared in " WORD " ( Volume 17, 1961 ); and William Labov's very first journal article " The social motivation of a sound change " was in " WORD " ( Volume 19, 1963 ).
