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Resumo

This study presents jaw movement data from Central Arrernte, an Australian Aboriginal language with six places of articulation in the stop series, including four coronal places of articulation. The focus of the study is on jaw consonant targets, and on the opening and closing movements of the jaw. As a point of comparison, data are also presented for English, a language with three places of articulation in the stop series. In line with previous results for English, jaw position in Arrernte is lowest for the velar /k/. The apico-post-alveolar (retroflex) /ʈ/, which is not found in English, has a jaw position almost as low as /k/. By contrast, the lamino-alveo-palatal /c/, which is also not found in English, has the highest jaw position. The remaining coronal consonants in Arrernte, /t/ (apico-alveolar and lamino-dental, respectively), show intermediate jaw positions, with differences between speakers. In terms of the kinematic measures examined (namely, variability in distance, duration and velocity of opening and closing movements), results show no consistent differences between English and Arrernte jaw movement.

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