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Assessing the link between speech perception and production through individual differences

Franken, M. K., McQueen, J. M., Hagoort, P., & Acheson, D. J. (2015). Assessing the link between speech perception and production through individual differences. In Proceedings of the 18th International Congress of Phonetic Sciences. Glasgow: the University of Glasgow.
This study aims to test a prediction of recent theoretical frameworks in speech motor control: if speech production targets are specified in auditory terms, people with better auditory acuity should have more precise speech targets. To investigate this, we had participants perform speech perception and production tasks in a counterbalanced order. To assess speech perception acuity, we used an adaptive speech discrimination task. To assess variability in speech production, participants performed a pseudo-word reading task; formant values were measured for each recording. We predicted that speech production variability to correlate inversely with discrimination performance. The results suggest that people do vary in their production and perceptual abilities, and that better discriminators have more distinctive vowel production targets, confirming our prediction. This study highlights the importance of individual differences in the study of speech motor control, and sheds light on speech production-perception interaction.
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The Max Planck Institute for Psycholinguistics is an institute of the German Max Planck Society. Our mission is to undertake basic research into the psychological,social and biological foundations of language. The goal is to understand how our minds and brains process language, how language interacts with other aspects of mind, and how we can learn languages of quite different types.

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