Japanese has a vowel duration contrast as one component of its language-specific phonemic repertory to distinguish word meanings. It is not clear, however, how a sensitivity to vowel duration can develop in a linguistic context. In the present study, using the visual habituation-dishabituation method, the authors evaluated infants' abilities to…

Examined whether the characteristics in perception of speech sounds found in preverbal hearing infants might extend to the perception of signed language in infants with congenital deafness. Seventeen Japanese mother-infant dyads participated in the study. Found that infants with deafness showed greater attentional and affective responsiveness to…

The development of and relationship between early language, symbolic play, sensorimotor skills, and social development were examined in a longitudinal study conducted in Japan with two young autistic males who were observed from the approximate ages of 2 to 4 years in clinic, day care, and home settings. One child acquired speech; the other did…

Examined in a longitudinal study of children were correspondences and correlations between early language development on the one hand, and the manipulation of objects and play development on the other. There were developmental correspondences between the onset of five language landmarks (the emergence of first word, referential word, demonstrative…

To investigate cross-sectionally and longitudinally the development of children's early verbal behavior, 10 normal first-born Japanese infants from middle-class families were observed monthly and examined from when they were 6 to 24 months of age. Audio- and video-taped language data were obtained in a laboratory playroom setting during 15-minute…

Describes the education of hearing-impaired infants and young children between 0-5 years of age at the Japan Oral School for the Deaf. Summarizes the school's three educational principles: utilization of residual hearing through hearing aids, early identification of hearing loss and early intervention, and auditory-oral interaction for…