Simultaneous bilingualismSimultaneous bilingualism is a form of bilingualism that takes place when a child becomes bilingual by learning two languages from birth. According to Annick De Houwer, in an article in The Handbook of Child Language, simultaneous bilingualism takes place in "children who are regularly addressed in two spoken languages from before the age of two and who continue to be regularly addressed in those languages up until the final stages" of language development. Both languages are acquired as first languages.
Second-language acquisitionSecond-language acquisition (SLA), sometimes called second-language learning — otherwise referred to as L2 (language 2) acquisition, is the process by which people learn a second language. Second-language acquisition is also the scientific discipline devoted to studying that process. The field of second-language acquisition is regarded by some but not everybody as a sub-discipline of applied linguistics but also receives research attention from a variety of other disciplines, such as psychology and education.
First languageA first language (L1), native language, native tongue, or mother tongue is the first language or dialect that a person has been exposed to from birth or within the critical period. In some countries, the term native language or mother tongue refers to the language or dialect of one's ethnic group rather than the individual's actual first language. The first language of a child is part of that child's personal, social and cultural identity.
Language transferLanguage transfer is the application of linguistic features from one language to another by a bilingual or multilingual speaker. Language transfer may occur across both languages in the acquisition of a simultaneous bilingual, from a mature speaker's first language (L1) to a second language (L2) they are acquiring, or from an L2 back to the L1.
Language deathIn linguistics, language death occurs when a language loses its last native speaker. By extension, language extinction is when the language is no longer known, including by second-language speakers, when it becomes known as an extinct language. A related term is linguicide, the death of a language from natural or political causes, and, rarely, glottophagy, the absorption or replacement of a minor language by a major language.
MultilingualismMultilingualism is the use of more than one language, either by an individual speaker or by a group of speakers. It is believed that multilingual speakers outnumber monolingual speakers in the world's population. More than half of all Europeans claim to speak at least one language other than their mother tongue; but many read and write in one language. Multilingualism is advantageous for people wanting to participate in trade, globalization and cultural openness.
Linguistic imperialismLinguistic imperialism or language imperialism is occasionally defined as "the transfer of a dominant language to other people". This language "transfer" (or rather unilateral imposition) comes about because of imperialism. The transfer is considered to be a sign of power; traditionally military power but also, in the modern world, economic power. Aspects of the dominant culture are usually transferred along with the language.
Language shiftLanguage shift, also known as language transfer or language replacement or language assimilation, is the process whereby a speech community shifts to a different language, usually over an extended period of time. Often, languages that are perceived to be higher status stabilise or spread at the expense of other languages that are perceived by their own speakers to be lower-status. An example is the shift from Gaulish to Latin during the time of the Roman Empire. For prehistory, Forster et al.
Prestige (sociolinguistics)In sociolinguistics, prestige is the level of regard normally accorded a specific language or dialect within a speech community, relative to other languages or dialects. Prestige varieties are language or dialect families which are generally considered by a society to be the most "correct" or otherwise superior. In many cases, they are the standard form of the language, though there are exceptions, particularly in situations of covert prestige (where a non-standard dialect is highly valued).
Language contactLanguage contact occurs when speakers of two or more languages or varieties interact with and influence each other. The study of language contact is called contact linguistics. When speakers of different languages interact closely, it is typical for their languages to influence each other. Language contact can occur at language borders, between adstratum languages, or as the result of migration, with an intrusive language acting as either a superstratum or a substratum.