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Evolutionary dynamics of language systems
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- Greenhill, Simon J. (author)
- Australian Natl Univ, ARC Ctr Excellence Dynam Language, Canberra, ACT 0200, Australia.;Max Planck Inst Sci Human Hist, Dept Linguist & Cultural Evolut, D-07745 Jena, Germany.
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- Wu, Chieh-Hsi (author)
- Univ Oxford, Dept Stat, Oxford OX1 3LB, England.
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- Hua, Xia (author)
- Australian Natl Univ, Res Sch Biol, Div Ecol Evolut & Genet, Macroevolut & Macroecol, Canberra, ACT 0200, Australia.
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- Australian Natl Univ, ARC Ctr Excellence Dynam Language, Canberra, ACT 0200, Australia;Max Planck Inst Sci Human Hist, Dept Linguist & Cultural Evolut, D-07745 Jena, Germany. Univ Oxford, Dept Stat, Oxford OX1 3LB, England. (creator_code:org_t)
- 2017-10-04
- 2017
- English.
- In: Proceedings of the National Academy of Sciences of the United States of America. - : NATL ACAD SCIENCES. - 0027-8424 .- 1091-6490. ; 114:42, s. E8822-E8829
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Understanding how and why language subsystems differ in their evolutionary dynamics is a fundamental question for historical and comparative linguistics. One key dynamic is the rate of language change. While it is commonly thought that the rapid rate of change hampers the reconstruction of deep language relationships beyond 6,000-10,000 y, there are suggestions that grammatical structures might retainmore signal over time than other subsystems, such as basic vocabulary. In this study, we use a Dirichlet process mixture model to infer the rates of change in lexical and grammatical data from 81 Austronesian languages. We show that, on average, most grammatical features actually change faster than items of basic vocabulary. The grammatical data show less schismogenesis, higher rates of homoplasy, and more bursts of contact-induced change than the basic vocabulary data. However, there is a core of grammatical and lexical features that are highly stable. These findings suggest that different subsystems of language have differing dynamics and that careful, nuanced models of language change will be needed to extract deeper signal from the noise of parallel evolution, areal readaptation, and contact.
Subject headings
- HUMANIORA -- Språk och litteratur -- Jämförande språkvetenskap och allmän lingvistik (hsv//swe)
- HUMANITIES -- Languages and Literature -- General Language Studies and Linguistics (hsv//eng)
Keyword
- language evolution
- language dynamics
- language phylogenies
- typology
- linguistics
Publication and Content Type
- ref (subject category)
- art (subject category)
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