Dialectology

Dialectology (from Ancient Greek διάλεκτος, dialektos 'talk, dialect' and -λογία, -logia) is the scientific study of dialects: subsets of languages. Though in the 19th century a branch of historical linguistics, dialectology is often now considered a sub-field of, or subsumed by, sociolinguistics. It studies variations in language based primarily on geographic distribution and their associated features. Dialectology deals with such topics as divergence of two local dialects from a common ancestor and synchronic variation.

Dialectologists are ultimately concerned with grammatical, lexical and phonological features that correspond to regional areas. Thus they usually deal not only with populations that have lived in certain areas for generations, but also with migrant groups that bring their languages to new areas (see language contact).

Commonly studied concepts in dialectology include the problem of mutual intelligibility in defining languages and dialects; situations of diglossia, where two dialects are used for different functions; dialect continua including a number of dialects of varying intelligibility; and pluricentrism, where a single language has two or more standard varieties.

In London, there were comments on the different dialects recorded in 12th-century sources, and a large number of dialect glossaries (focussing on vocabulary) were published in the 19th century. Philologists would also study dialects, as they preserved earlier forms of words.

In Britain, the philologist Alexander John Ellis described the pronunciation of English dialects in an early phonetic system in volume 5 of his series On Early English Pronunciation. The English Dialect Society was later set up by Joseph Wright to record dialect words in the British Isles. This culminated in the production of the six-volume English Dialect Dictionary in 1905. The English Dialect Society was then disbanded, as its work was considered complete, although some regional branches (e.g. the Yorkshire Dialect Society) still operate today.

Traditional studies in dialectology were generally aimed at producing dialect maps, in which lines were drawn on a map to indicate boundaries between different dialect areas. The move away from traditional methods of language study, however, caused linguists to become more concerned with social factors. Dialectologists, therefore, began to study social, as well as regional variation. The Linguistic Atlas of the United States (the 1930s) was amongst the first dialect studies to take social factors into account.

Under the leadership of Harold Orton, the University of Leeds became a centre for the study of English dialect and set up an Institute of Dialect and Folk Life Studies. In the 1950s, the university undertook the Survey of English Dialects, which covered all of England, some bordering areas of Wales, and the Isle of Man. In addition, the university produced more than 100 monographs on dialect before the death of Harold Orton in 1975. The Institute closed in September 1983 to accommodate budget cuts at the University, but its dialectological studies are now part of a special collection, the Leeds Archive of Vernacular Culture, in the university's Brotherton Library.

This shift^{[clarification needed]} in interest consequently saw the birth of sociolinguistics, which is a mixture of dialectology and social sciences. However, Graham Shorrocks has argued that there was always a sociological element to dialectology and that many of the conclusions of sociolinguists (e.g. the relationships with gender, class and age) can be found in earlier work by traditional dialectologists.