Contrastive linguistics
Encyclopedia
Contrastive linguistics is a practice-oriented linguistic
Linguistics
Linguistics is the scientific study of human language. Linguistics can be broadly broken into three categories or subfields of study: language form, language meaning, and language in context....

 approach that seeks to describe the differences and similarities between a pair of languages (hence it is occasionally called "differential linguistics").

History

While traditional linguistic studies had developed comparative methods (comparative linguistics
Comparative linguistics
Comparative linguistics is a branch of historical linguistics that is concerned with comparing languages to establish their historical relatedness....

), chiefly to demonstrate family relations between cognate languages, or to illustrate the historical developments of one or more languages, modern contrastive linguistics intends to show in what ways the two respective languages differ, in order to help in the solution of practical problems. (Sometimes the terms diachronic linguistics and synchronic linguistics are used to refer to these two perspectives.)

Contrastive linguistics, since its inception by Robert Lado
Robert Lado
Dr. Robert Lado was an American expert on modern linguistics. His parents were Spanish immigrants who relocated to Spain before he had a chance to learn English. He returned to the United States at the age of 21, and began to learn English as an adult...

 in the 1950s, has often been linked to aspects of applied linguistics
Applied linguistics
Applied linguistics is an interdisciplinary field of study that identifies, investigates, and offers solutions to language-related real-life problems...

, e.g., to avoid interference errors in foreign-language learning, as advocated by Di Pietro (1971) (see also contrastive analysis
Contrastive analysis
Contrastive analysis is the systematic study of a pair of languages with a view to identifying their structural differences and similarities. Historically it has been used to establish language genealogies....

), to assist interlingual transfer in the process of translating
Translation
Translation is the communication of the meaning of a source-language text by means of an equivalent target-language text. Whereas interpreting undoubtedly antedates writing, translation began only after the appearance of written literature; there exist partial translations of the Sumerian Epic of...

 texts from one language into another, as demonstrated by Vinay & Darbelnet (1958) and more recently by Hatim (1997) (see translation
Translation
Translation is the communication of the meaning of a source-language text by means of an equivalent target-language text. Whereas interpreting undoubtedly antedates writing, translation began only after the appearance of written literature; there exist partial translations of the Sumerian Epic of...

), and to find lexical equivalents in the process of compiling bilingual dictionaries, as illustrated by Heltai (1988) and Hartmann (1991) (see bilingual lexicography).

Contrastive descriptions can be made at every level of linguistic structure: speech sounds (phonology
Phonology
Phonology is, broadly speaking, the subdiscipline of linguistics concerned with the sounds of language. That is, it is the systematic use of sound to encode meaning in any spoken human language, or the field of linguistics studying this use...

), written symbols (graphology
Graphology
Graphology is the pseudoscientific study and analysis of handwriting, especially in relation to human psychology. In the medical field, it can be used to refer to the study of handwriting as an aid in diagnosis and tracking of diseases of the brain and nervous system...

), word-formation (morphology
Morphology (linguistics)
In linguistics, morphology is the identification, analysis and description, in a language, of the structure of morphemes and other linguistic units, such as words, affixes, parts of speech, intonation/stress, or implied context...

), word meaning (lexicology
Lexicology
Lexicology is the part of linguistics which studies words, their nature and meaning, words' elements, relations between words , word groups and the whole lexicon....

), collocation (phraseology
Phraseology
In linguistics, phraseology is the study of set or fixed expressions, such as idioms, phrasal verbs, and other types of multi-word lexical units , in which the component parts of the expression take on a meaning more specific than or otherwise not predictable from the sum of their meanings when...

), sentence structure (syntax
Syntax
In linguistics, syntax is the study of the principles and rules for constructing phrases and sentences in natural languages....

) and complete discourse (textology). Various techniques used in corpus linguistics
Corpus linguistics
Corpus linguistics is the study of language as expressed in samples or "real world" text. This method represents a digestive approach to deriving a set of abstract rules by which a natural language is governed or else relates to another language. Originally done by hand, corpora are now largely...

 have been shown to be relevant in intralingual and interlingual contrastive studies, e.g. by 'parallel-text' analysis (Hartmann 1997).

Contrastive linguistic studies can also be applied to the differential description of one or more varieties within a language, such as styles (contrastive rhetoric
Contrastive rhetoric
Contrastive rhetoric is the study of how a person's first language and culture influence his or her writing in a second language.Research began in the 1960s, started by the American applied linguist Robert Kaplan...

), dialects, registers or terminologies of technical genres.
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