Mergers in Bardi: contextual probability and predictors of sound change

Abstract

Abstract A crucial question for historical linguistics has been why some sound changes happen but not others. Recent work on the foundations of sound change has argued that subtle distributional facts about segments in a language, such as functional load, play a role in facilitating or impeding change. Thus not only are sound changes not all equally plausible, but their likelihood depends in part on phonotactics and aspects of functional load, such as the density of minimal pairs. Tests of predictability on the chance of phoneme merger suggest that phonemes with low functional load (as defined by minimal pair density) are more likely to merge, but this has been investigated only for a small number of languages with very large corpora and well attested mergers. Here we present work suggesting that the same methods can be applied to much smaller corpora, by presenting the results of a preliminary exploration of nine Australian languages, with a particular focus on Bardi, a Nyulnyulan language from Australia’s northwest. Our results support the hypothesis that the probability of merger is higher when phonemes distinguish few minimal pairs.