Infant speech perception bootstraps word learning.
By their first birthday, infants can understand many spoken words. Research in cognitive development has long focused on the conceptual changes that accompany word learning, but learning new words also entails perceptual sophistication. Several developmental steps are required as infants learn to segment, identify and represent the phonetic forms of spoken words, and map those word forms to different concepts. We review recent research on how infants' perceptual systems unfold in the service of word learning, from initial sensitivity for speech to the learning of language-specific sound patterns. Building on a recent theoretical framework and emerging new methodologies, we show how speech perception is crucial for word learning, and suggest that it bootstraps the development of a separate but parallel phonological system that links sound to meaning.
Werker
Janet F
JF
Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver BC, V6T 1Z4, Canada. jwerker@psych.ubc.ca
Yeung
H Henny
HH
D006801:Humans; D007223:Infant; D007804:Language Development; D019303:Multilingualism; D010153:Paired-Associate Learning; D010700:Phonetics; D002666:Psychology, Child; D012660:Semantics; D013067:Speech Perception; D014825:Vocabulary