A cultural universal (also called a human universal), as discussed by Emile Durkheim, George Murdock, Claude Lévi-Strauss, Donald Brown, Steven Pinker and others, is an element, pattern, trait, or institution that is common to all human cultures worldwide. In his book Human Universals (1991), Donald Brown defines human universals as comprising “those features of culture, society, language, behavior, and psyche for which there are no known exception”, providing a list of hundreds of items he suggests as universal. Steven Pinker lists all Brown’s universals in the appendix of his book The Blank Slate.
Evolutionary psychologists hold that behaviors or traits that occur universally in all cultures are good candidates for evolutionary adaptations. Some anthropological and sociological theorists that take a cultural relativist perspective may deny the existence of cultural universals: the extent to which these universals are “cultural” in the narrow sense, or in fact biologically inherited behavior is an issue of “nature versus nurture“. The existence of cultural universals provides strong evidence against the currently fashionable notion that all human behaviours, including gender differences, are culturally determined.