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Drivers of geographical patterns of North American language diversity.

ABSTRACT: Although many hypotheses have been proposed to explain why humans speak so many languages and why languages are unevenly distributed across the globe, the factors that shape geographical patterns of cultural and linguistic diversity remain poorly understood. Prior research has tended to focus on identifying universal predictors of language diversity, without accounting for how local factors and multiple predictors interact. Here, we use a unique combination of path analysis, mechanistic simulation modelling, and geographically weighted regression to investigate the broadly described, but poorly understood, spatial pattern of language diversity in North America. We show that the ecological drivers of language diversity are not universal or entirely direct. The strongest associations imply a role for previously developed hypothesized drivers such as population density, resource diversity, and carrying capacity with group size limits. The predictive power of this web of factors varies over space from regions where our model predicts approximately 86% of the variation in diversity, to areas where less than 40% is explained.

SUBMITTER: Pacheco Coelho MT

PROVIDER: S-EPMC6452074 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Drivers of geographical patterns of North American language diversity.

Pacheco Coelho Marco Túlio MT Pereira Elisa Barreto EB Haynie Hannah J HJ Rangel Thiago F TF Kavanagh Patrick P Kirby Kathryn R KR Greenhill Simon J SJ Bowern Claire C Gray Russell D RD Colwell Robert K RK Evans Nicholas N Gavin Michael C MC

Proceedings. Biological sciences 20190301 1899

Although many hypotheses have been proposed to explain why humans speak so many languages and why languages are unevenly distributed across the globe, the factors that shape geographical patterns of cultural and linguistic diversity remain poorly understood. Prior research has tended to focus on identifying universal predictors of language diversity, without accounting for how local factors and multiple predictors interact. Here, we use a unique combination of path analysis, mechanistic simulati ...[more]

PMID: 30914010

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Drivers of geographical patterns of North American language diversity.

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Drivers of geographical patterns of North American language diversity.

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