Reassessment of global gene–language coevolution

Abstract

In On the Origin of Species, Darwin proposed that human races and languages evolved in concert following a tree-like history of splits and isolation (1). Linguists and anthropologists have long been skeptical of this idea because historical and ethnographic evidence suggest that group boundaries are fluid and differentially permeable to the movement of peoples and languages. For this reason, as Sapir (2) so eloquently put it, “the history of each is apt to follow a distinctive course.” In PNAS, Creanza et al. (3) weigh in on this debate and provide a conceptual and methodological framework for future studies of population genetic and linguistic coevolution.

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