The How and Why of Auditory-Visual Speech Perception: Affective and Articulatory Factors in Japanese and English Language Infants and Children

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When we talk to babies certain aspects of our face and voice change compared with when we talk to adults. In this project we investigate the nature of the changes mothers make to their face and voice when talking to infants, the emotional or language-based purpose of these changes, and how infants and schoolchildren perceive these changes. Our previous studies show that visual information is used more by English than Japanese language speakers, so these studies are investigated with both these language groups. The results will inform us more about language learning, hearing aid use, and speech recognition by machines.