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Developmental linguistics is the study of the development of linguistic ability in an individual, particularly the acquisition of language in childhood.It involves research into the different stages in language acquisition, language retention, and language loss in both first and second languages, in addition to the area of bilingualism.
Social interactionist theory (SIT) is an explanation of language development emphasizing the role of social interaction between the developing child and linguistically knowledgeable adults. It is based largely on the socio-cultural theories of Soviet psychologist, Lev Vygotsky .
Trask's theory therefore is that children learn language by acquiring and experimenting with grammatical patterns, the statistical language acquisition theory. [ 72 ] The two most accepted theories in language development are psychological and functional .
Lev Semyonovich Vygotsky (Russian: Лев Семёнович Выготский, [vɨˈɡotskʲɪj]; Belarusian: Леў Сямёнавіч Выгоцкі; November 17 [O.S. November 5] 1896 – June 11, 1934) was a Russian and Soviet psychologist, best known for his work on psychological development in children and creating the framework known as cultural-historical activity theory.
The core of this theory lies on the existence of an innate universal grammar, grounded on the poverty of the stimulus. [10] The UG model of principles, basic properties which all languages share, and parameters, properties which can vary between languages, has been the basis for much second-language research.
The theory has often been extended to a critical period for second-language acquisition (SLA). David Singleton states that in learning a second language, "younger = better in the long run", but points out that there are many exceptions, noting that five percent of adult bilinguals master a second language even though they begin learning it when they are well into adulthood—long after any ...
According to him, a child before the age of two will not sufficiently acquire language, while development of full native competence in a language must occur before the onset of puberty. [16] This suggests that language is innate and occurs through development instead of through feedback from the environment. [ 17 ]
With this approach, language is viewed as having its origins in social exchange and communication [2] relating it closely to interactionism in sociology. The theory begins with the earliest stages of infancy, looking at the way children communicate and interact with caregivers as a means of achieving motives and generating contact. [3] As ...