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Item Learnability of laryngeal abduction in voiceless fricatives : cross-linguistic evidence(2007-08) Gordeeva, Olga B.; UK Economics Social and Research Grant Council (grant PTA-026-27-0368)Previous research of laryngeal-oral gestural coordination in vowel-voiceless fricative sequences (Vf) shows that earlier timing of glottal opening relative to oral constriction is a languageindependent aerodynamic property. In this paper, we provide evidence that the extent of this gestural dissociation is nonetheless learnable in a varietyspecific way, and is, thus, actively controlled. This study shows that in some British English varieties, large temporal laryngeal-oral dissociation in Vf transitions is a correlate of the fricative /voice/ contrast, while the dissociation is much tighter in a language neutralising /voice/ such as Russian. The learnability of Vf-gestures is important in the context of theories on gestural phonology and acoustic multidimensionality of the /voice/ contrast.Item Variability in fricative production of young people with Down's syndrome : an EPG analysis(2007-08) Timmins, Claire; Hardcastle, William J.; Wood, Sara; McCann, Joanne; Wishart, Jennifer; Acknowledgements: MRC grant no. G0401388Speech production in Down's syndrome is highly variable, with particular problems arising from complex articulations such as fricatives. In this paper, EPG analysis is used to study the variation in the production of the fricatives /s/ and /sh/ in 6 young people with Down's syndrome. The variability of these productions is compared with information from the Robbins and Klee Oral/Speech Motor Control Protocol.