10. Linguistics

Language, the principal means used by human beings to communicate with one another. Language is primarily spoken, although it can be transferred to other media, such as writing. If the spoken means of communication is unavailable, as may be the case among the deaf, visual means such as sign language can be used. A prominent characteristic of language is that the relation between a linguistic sign and its meaning is arbitrary: There is no reason other than convention among speakers of English that a dog should be called dog, and indeed other languages have different names (for example, Spanish perro, Russian sobaka, Japanese inu). Language can be used to discuss a wide range of topics, a characteristic that distinguishes it from animal communication. The dances of honey bees, for example, can be used only to communicate the location of food sources. While the language-learning abilities of apes have surprised many—and there continues to be controversy over the precise limits of these abilities—scientists and scholars generally agree that apes do not progress beyond the linguistic abilities of a two-year-old child.

Linguistics is the scientific study of language. Several of the subfields of linguistics that will be discussed here are concerned with the major components of language: Phonetics is concerned with the sounds of languages, phonology with the way sounds are used in individual languages, morphology with the structure of words, syntax with the structure of phrases and sentences, and semantics with the study of meaning. Another major subfield of linguistics, pragmatics, studies the interaction between language and the contexts in which it is used. Synchronic linguistics studies a language's form at a fixed time in history, past or present. Diachronic, or historical, linguistics, on the other hand, investigates the way a language changes over time. A number of linguistic fields study the relations between language and the subject matter of related academic disciplines, such as sociolinguistics (sociology and language) and psycholinguistics (psychology and language). In principle, applied linguistics is any application of linguistic methods or results to solve problems related to language, but in practice it tends to be restricted to second-language instruction.