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Sato, Yutaka; Kato, Mahoko; Mazuka, Reiko – Developmental Psychology, 2012
The Japanese language has single/geminate obstruents characterized by durational difference in closure/frication as part of the phonemic repertoire used to distinguish word meanings. We first evaluated infants' abilities to discriminate naturally uttered single/geminate obstruents (/pata/ and /patta/) using the visual habituation-dishabituation…
Descriptors: Cues, Nonverbal Communication, Infants, Japanese
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Steeve, Roger W.; Moore, Christopher A.; Green, Jordan R.; Reilly, Kevin J.; McMurtrey, Jacki Ruark – Journal of Speech, Language, and Hearing Research, 2008
Purpose: The ontogeny of mandibular control is important for understanding the general neurophysiologic development for speech and alimentary behaviors. Prior investigations suggest that mandibular control is organized distinctively across speech and nonspeech tasks in 15-month-olds and adults and that, with development, these extant forms of…
Descriptors: Investigations, Human Body, Infants, Neurological Organization
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Poulson, Claire L. – American Journal of Mental Retardation, 1988
Parents of three Down's Syndrome infants, aged 2-8 months, provided continuous reinforcement for vocalization (CRF) and differential reinforcement of other-than-vocalization (DRO). All infants produced systematically higher vocalization rates during CRF, even though the amount of social stimulation during DRO was equal to or greater than the…
Descriptors: Child Language, Downs Syndrome, Infant Behavior, Interaction