Doctor of Letters, also termed Doctor of Literature in some countries, is a terminal degree in the arts, humanities, and social sciences. In the United States, at universities such as Drew University, the degree is an "interdisciplinary" program of postgraduate study designed "with working professionals in mind." Depending on the country, the degree may also be a higher doctorate after the Doctor of Philosophy (Ph.D.) degree or equivalent to a higher doctorate, such as the Doctor of Science or Doctor of Laws (LL.D). It is awarded in Argentina and Mexico by universities in recognition of superior accomplishment in the Arts, Social Sciences or humanities, such as original contributions to the creative or cultural arts, or scholarship in Social Sciences and humanities and other merits. or may be conferred as an earned higher doctorate by Universities in England or Canada after the submission and academic evaluation of a portfolio of sustained scholarship, publications, research, or other scientific work of the highest caliber.