 An important early bridge from anthropology to philosophy was established by Edward Westermarck (1906–8 and 1932), a social scientist who wrote anthropological and philosophical works defending forms of empirical as well as metaethical moral relativism. In the latter half of the 20th century, moral philosophers began devoting considerable attention to moral relativism and some—most notably Richard B. Brandt (1954) and John Ladd (1957)—took quite seriously the empirical effort of anthropology to understand the moralities of different cultures, to the point of making such empirical inquiries themselves (an anticipation of the recent emphasis on experimental philosophy, to be discussed in  section 3).  In the past several decades there has been increasing consideration of moral relativism, and there is now an enormous literature on the subject (the Bibliography below is very limited). Most of these discussions are situated in the domain of “pure metaethics,” but not all. For example, there is considerable work on moral relativism in connection with human rights (Donnelly 2013, part 2 and Okin 1998), political philosophy (Accetti 2015, Bilgrami 2011 and Long 2004) and feminist philosophy (Code 1995 and Khader 2019). There are also discussions of moral relativism in applied fields such as medical ethics (Earp 2016).