Distributionalism has much in common with structuralism. However, both appear in the United States while the theses of Ferdinand de Saussure are only just beginning to be known in Europe: distributionism must be considered as an original theory in relation to Saussurianism. It was mainly psychological theoriesbehaviorists that allowed the birth of distributionalism. According to these theories, human behaviour would be totally explainable, and its mechanics could be studied. The study of reflexes, for example, makes it possible to predict certain attitudes. Leonard Bloomfield concludes that language, like behaviour, could be analysed as a predictable mechanism, explicable by the external conditions of its appearance. The notions of "mechanism", "inductive method" and "corpus" are key terms of distributionalism.
Mechanism vs Mentalism
Bloomfield calls his thesis mechanism, and he opposes it to mentalism: for him, in fact, speech cannot be explained as an effect of thoughts. Thus, one must be able to account for linguistic behaviour and the hierarchical structure of the messages conveyed without any assumptions about the speakers' intentions and mental states. From the behaviourist perspective, a given stimulus corresponds to a given response. However, meaning is an unstable thing for distributionists, depending on the situation, and is not observable. It must therefore be eliminated as an element of language analysis. The only regularity is of a morphosyntactic nature: it is the structural invariants of the morphosyntax that allow us to reconstruct the language system from an analysis of its observable elements, the words of a given corpus.
Salient features
The main idea of distributionalism is that linguistic units "are what they do", which means that the identity of linguistic units are defined by their distribution. Zellig Harris used to consider meaning as too intuitive to be a reliable ground for linguistic research. Language use has to be observed directly while looking at all the environments in which a unit can occurr. Harris advocated for a distributional approach, since “difference of meaning correlates with difference of distribution.”.
External references
Geeraerts, Dirk. 2017. "Distributionalism, old and new", in Makarova, Anastasia, Dickey, Stephen M., Divjak, Dagmar Eds., Each Venture a New Beginning. Studies in Honor of Laura A. Janda, Slavica Publisher; Bloomington, IN, ISBN: 978-0-89357-478-9, pp. 29 - 38