期刊
COGNITION
卷 81, 期 2, 页码 B33-B44出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0010-0277(01)00122-6
关键词
speech segmentation; child-directed speech; infant-directed speech; word learning; isolated words
资金
- NIDCD NIH HHS [DC 03082] Funding Source: Medline
Fluent speech contains no known acoustic analog of the blank spaces between printed words. Early research presumed that word learning is driven primarily by exposure to isolated words. In the last decade there has been a shift to the view that exposure to isolated words is unreliable and plays little if any role in early word learning. This study revisits the role of isolated words. The results show (a) that isolated words are a reliable feature of speech to infants, (b) that they include a variety of word types, many of which are repeated in close temporal proximity, (c) that a substantial fraction of the words infants produce are words that mothers speak in isolation, and (d) that the frequency with which a child hears a word in isolation predicts whether that word will be learned better than the child's total frequency of exposure to that word. Thus, exposure to isolated words may significantly facilitate vocabulary development at its earliest stages. (C) 2001 Elsevier Science B.V. All rights reserved.
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