MacDonald P. Jackson the New Zealand Academy of the Humanities (FNZAH). In 2009 he was appointed a Fellow of the Royal Society of New Zealand (FRSNZ). Jackson's most recent work was a year long examination of the disputed authorship of the classic poem "The Night Before Christmas", also called "A Visit from St. Nicholas." Jackson applied modern computational stylistics techniques to the corpora of verse left by both claimants, Clement Clarke Moore and Henry Livingston Jr., including a new test, statistical analysis of phonemes. His book, "Who Wrote" ""The Night Before Christmas"?" identifies the true author and makes a significant contribution to the
A Visit from St. Nicholas primarily using an anapaestic metrical scheme, and it is claimed that some of the phraseology of "A Visit" is consistent with other poems by Livingston, and that Livingston's poetry is more optimistic than Moore's poetry published in his own name. But Stephen Nissenbaum argues in his "Battle for Christmas" that the poem could have been a social satire of the Victorianization of Christmas. Furthermore, Kaller claims that Foster cherry-picked only the poems that fit his thesis and that many of Moore's unpublished works have a tenor, phraseology, and meter similar to "A Visit". Moore had even written a letter titled