言語行動の発達(V) : 母子相互作用における指さしと言語の機能 : 13から30か月児の縦断観察資料の分析

概要

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Our previous research had suggested that pointing was used not only because of the lack of linguistic ability but rather as a complementary behavior: pointing and vocalizing complemented one another. In the present paper, the function of pointing behavior vis-a-vis linguistic behavior was examined. Infants of 13, 17, 21, 24 and 30 months were observed as they interacted with their mothers at home, spontaneously and in semistructured picture book reading situations. Every pointing by infants was analyzed according to the functional categories and its accompanying vocalization was also categorized. In order to know if infants' pointing was responsive to mothers' speech or not, mothers' speech preceding infants' pointing behavior was examined. It was demonstrated that pointing by infants at first essentially self-attentional, became responsive by 21 months of age, then spontaneous as well as communicative by 24 months, and finally informative by 30 months. In addition, the comparative analysis of infants' language accompanying and not accompanying pointing revealed that deictic words and questions were especially used with pointing served to complement and extend the verval message. The role of the picture in language acquisition was also discussed.
東京大学の論文
1983-03-15