Demographic shifts, inter-group contact, and environmental conditions drive language extinction and diversification

@inproceedings{Coelho12021DemographicSI,
  title={Demographic shifts, inter-group contact, and environmental conditions drive language extinction and diversification},
  author={Marco Tulio Pacheco Coelho1 and Hannah J. Haynie and Claire Bowern and Robert K. Colwell and Simon J. Greenhill and Kathryn R. Kirby and Thiago Fernando Rangel and Michael C. Gavin},
  year={2021}
}
Humans currently collectively use thousands of languages1,2. The number of languages in a given region (i.e. language “richness”) varies widely3–7. Understanding the processes of diversification and homogenization that produce these patterns has been a fundamental aim of linguistics and anthropology. Empirical research to date has identified various social, environmental, geographic, and demographic factors associated with language richness3. However, our understanding of causal mechanisms and…