20th-century philosophical movement that has influenced such areas as linguistics, anthropology, and literary criticism. Inspired by the work of the Swiss linguist Ferdinand de Saussure (1857-1913), structuralists believe that objects should be analysed as systems of relations, rather than as positive entities. Saussure proposed that language is a system of arbitrary signs, meaning that there is no intrinsic link between the `signifier' (the sound or mark) and the `signified' (the concept it represents). Hence any linguistic term can only be defined by its differences from other terms. His ideas were taken further by Roman Jakobson (1896-) and the Prague school of linguistics, and were extended into a general method for the social sciences by the French anthropologist Claude Levi-Strauss. The French writer Roland Barthes took the lead in applying the ideas of structuralism to literary criticism, arguing that the critic should identify the structures within a text that determine its possible meanings, independently of any reference to the real. This approach is radicalized in Barthes' later work and in the practice of `deconstruction', pioneered by the French philosopher Jacques Derrida (1930-). Here the text comes to be viewed as a `decentred' play of structures, lacking any ultimately determinable meaning.