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SRPP du Vendredi 20 Janvier 2017

Melissa Redford (University of Oregon)

Titre : Dissociations in the development of articulatory timing : Implications for representation and control in speech production

Résumé :
Articulatory timing refers to the temporal coordination of speech articulators to achieve motor goals in sequence. Given this definition, timing can be thought of either as a motor speech skill or as a language behavior. Whereas stable coordination patterns emerge with neuromotor maturation and speech motor practice ; goal sequencing emerges with the acquisition of language. Although this neat division within timing behavior that references "speech" versus "language" is compatible with a traditional performance/competence distinction, it is at odds with the interactionist perspective adopted in behavior-focused research on the acquisition of speech-language. Nonetheless, the division provides a good characterization of findings from two developmental studies we conducted recently. In particular, the findings from one study suggest a dissociation in the representation and execution of temporal patterns within words. The findings from the other suggest differential development of schwa reduction and coarticulation in DET+N sequences. In this talk, I will present both studies and endeavor to resolve the seeming contradiction between these findings and an interactionist perspective by incorporating them into a developmentally-sensitive model of speech production.