Developmental changes in the weighting of prosodic cues
Identifieur interne : 005022 ( Main/Curation ); précédent : 005021; suivant : 005023Developmental changes in the weighting of prosodic cues
Auteurs : Amanda Seidl [États-Unis] ; Alejandrina Cristià [États-Unis]Source :
- Developmental Science [ 1363-755X ] ; 2008-07.
Abstract
Previous research has shown that the weighting of, or attention to, acoustic cues at the level of the segment changes over the course of development ( Nittrouer & Miller, 1997 ; Nittrouer, Manning & Meyer, 1993). In this paper we examined changes over the course of development in weighting of acoustic cues at the suprasegmental level. Specifically, we tested English‐learning 4‐month‐olds’ performance on a clause segmentation task when each of three acoustic cues to clausal units was neutralized and contrasted it with performance on a Baseline condition where no cues were manipulated. Comparison with the reported performance of 6‐month‐olds on the same task (Seidl, 2007) reveals that 4‐month‐olds weight prosodic cues to clausal boundaries differently than 6‐month‐olds, relying more heavily on all three correlates of clausal boundaries (pause, pitch and vowel duration) than 6‐month‐olds do, who rely primarily on pitch. We interpret this as evidence that 4‐month‐olds use a holistic processing strategy, while 6‐month‐olds may already be able to attend separately to isolated cues in the input stream and may, furthermore, be able to exploit a language‐specific cue weighting. Thus, in a way similar to that in other cognitive domains, infants begin as holistic auditory scene processors and are only later able to process individual auditory cues.
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DOI: 10.1111/j.1467-7687.2008.00704.x
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