Co-occurrence of preverbal vocal behavior and motor action in early infancy

被引:69
作者
Ejiri, K
Masataka, N
机构
[1] Ibaraki Christian Coll, Hitachi, Ibaraki 3191295, Japan
[2] Kyoto Univ, Primate Res Inst, Kyoto, Japan
关键词
D O I
10.1111/1467-7687.00147
中图分类号
B844 [发展心理学(人类心理学)];
学科分类号
040202 ;
摘要
This study reports on co-occurrence of vocal behaviors and motor actions in infants in the prelinguistic stage. Four Japanese infants were studied longitudinally from the age of 6 months to 11 months. For all the infants, a 40 min sample was coded for each monthly period. The vocalizations produced by the infants co-occurred with their rhythmic actions with high frequency, particularly in the period preceding the onset of canonical babbling. Acoustical analysis it-as conducted on the vocalizations recorded before and after the period when co-occurrence took place most frequently. Among the vocalizations recorded in the period when co-occurrence appeared most frequently, those that co-occurred with rhythmic action had significantly shorter syllable duration and shorter formant-frequency transition duration compared with those that did not co-occur with rhythmic action. The rapid transitions and short syllables were similar to patterns of duration found in mature speech. The acoustic features remained even after co-occurrence disappeared. These findings suggest that co-occurrence of rhythmic action and vocal behavior may contribute to the infant's acquisition of the ability to perform the rapid glottal and articulatory movements that are indispensable for spoken language acquisition.
引用
收藏
页码:40 / 48
页数:9
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