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Communication Dans Un Congrès Année : 2017

The lexical frequency of labial-velar stops as a window on the linguistic prehistory of northern sub-Saharan Africa

Résumé

Cross-linguistically, labial-velar stops are rather rare, but they are known to be common in the phonological inventories of the languages of northern sub-Saharan Africa (NSSA) (Cahill 2008, Maddieson 2011). For this reason, labial-velar stops are usually considered to be a distinctive areal feature of NSSA (Clements & Rialland 2008, Güldemann 2008). At the same time, a cursory examination of the descriptions of the languages that have labial-velar stops quickly reveals that they can vary significantly with respect to the status of these consonants in their phonologies and lexicons. This paper presents the results of a survey of the lexical frequency of labial-velar stops in 336 languages of NSSA and discusses their implications for reconstruction of the history of the area and its languages. To the best of our knowledge, our survey is the first example of such a large-scale survey of the lexical frequency of an areal sound pattern. It was made possible thanks to the recently created lexical database source RefLex (www.reflex.cnrs.fr). We statistically analyzed the spatial patterns in the distribution of lexical frequencies of labial-velar stops within NSSA and the patterns of distribution of labial-velar stops within the lexicon. The spatial analysis of the data using Generalized Additive Modeling shows that there are three major areas with high lexical frequency of labial-velar stops within NSSA. The first two areas roughly correspond to coastal West Africa with the divide between them centered around the Dahomey forest gap. The third area corresponds to CAR & northern DRC and is separated from the closest West African area by a major discontinuity in Cameroon and northeastern Nigeria. When considered against the geography of NSSA, this spatial distribution suggests that the two areas are hotbeds not so much for spread but for retention of labial-velar stops, with the hotbeds arguably correlating with higher incidence of language shift events (as opposed to language contact) as the principal mechanism for the transfer of labial-velars. The data clearly imply that labial-velar stops and a number of other correlated phonetic and phonological features should not be reconstructed for Proto Niger-Congo or any of its major branches. Furthermore, the observed distribution suggests a more northern localization of the homelands of most major branches of Niger-Congo in grassland and savanna ecoregions. Finally, the data are strongly indicative of a late and relatively quick passage of Bantoid through the areas of high lexical frequency of labial-velar stops, supporting the “East-out-of-West” hypothesis of the Eastern Bantu emergence with the Eastern Bantu break-off point somewhere south of the rainforest.
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halshs-01676446 , version 1 (05-01-2018)

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  • HAL Id : halshs-01676446 , version 1

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Dmitry Idiatov, Mark van de Velde. The lexical frequency of labial-velar stops as a window on the linguistic prehistory of northern sub-Saharan Africa. DLCE Workshop "Language shift and substratum interference in (pre)history", Max Planck Institute for the Science of Human History, Jul 2017, Jena, Germany. ⟨halshs-01676446⟩
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