Cultural relativism is the position that there is no universal standard to measure cultures by, and that all cultural values and beliefs must be understood relative to their cultural context, and not judged based on outside norms and values. Proponents of cultural relativism also tend to argue that the norms and values of one culture should not be evaluated using the norms and values of another.
It was established as in anthropological research by Franz Boas in the first few decades of the 20th century and later popularized by his students. Boas first articulated the idea in 1887: "civilization is not something absolute, but...is relative, and... our ideas and conceptions are true only so far as our civilization goes". However, Boas did not coin the term.
The first use of the term recorded in the Oxford English Dictionary was by philosopher and social theorist Alain Locke in 1924 to describe Robert Lowie's "extreme cultural relativism", found in the latter's 1917 book Culture and Ethnology. The term became common among anthropologists after Boas' death in 1942, to express their synthesis of a number of ideas he had developed. Boas believed that the sweep of cultures, to be found in connection with any subspecies, is so vast and pervasive that there cannot be a relationship between culture and race. Cultural relativism involves specific epistemological and methodological claims. Whether or not these claims necessitate a specific ethical stance is a matter of debate. Cultural relativism became popularized after World War II in reaction to historical events such as "Nazism, and to colonialism, ethnocentrism and racism more generally."
In antiquity
Herodotus (Histories 3.38) observes on the relativity of mores (νόμοι):
He mentions an anecdote of Darius the Great who illustrated the principle by inquiring about the funeral customs of the Greeks and the Callatiae, peoples from the extreme western and eastern fringes of his empire, respectively. They practiced cremation and funerary cannibalism, respectively, and were each dismayed and abhorred at the proposition of the other tribes' practices.
The works of the Pyrrhonist philosopher Sextus Empiricus detail ancient Greek arguments for cultural relativism as part of the tenth of the Ten Modes of Aenesidemus.
As a methodological and heuristic device
According to George E. Marcus and Michael M. J. Fischer:
Cultural relativism was, in part, a response to Western ethnocentrism. Ethnocentrism may take obvious forms, in which one consciously believes that one's people's arts are the most beautiful, values the most virtuous, and beliefs the most truthful. Franz Boas, originally trained in physics and geography, and heavily influenced by the thought of Kant, Herder, and von Humboldt, argued that one's culture may mediate and thus limit one's perceptions in less obvious ways. Boas understood "culture" to include not only certain tastes in food, art, and music, or beliefs about religion; he assumed a much broader notion of culture, defined as:
This view of culture confronts anthropologists with two problems: first, how to escape the unconscious bonds of one's own culture, which inevitably bias our perceptions of and reactions to the world, and second, how to make sense of an unfamiliar culture. The principle of cultural relativism thus forced anthropologists to develop innovative methods and heuristic strategies.
As a methodological tool
Between World War I and II, cultural relativism was the central tool for American anthropologists in this rejection of Western claims to universality, and salvage of non-Western cultures. It functioned to transform Boas' epistemology into methodological lessons.
This is most obvious in the case of language. Although language is commonly thought of as a means of communication, Boas called attention especially to the idea that it is also a means of categorizing experiences, hypothesizing that the existence of different languages suggests that people categorize, and thus experience, language differently (this view was more fully developed in the hypothesis of Linguistic relativity).