Document Detail

Acoustic markers of prominence influence infants' and adults' segmentation of speech sequences.
MedLine Citation:
PMID:  21524015     Owner:  NLM     Status:  In-Process    
Two experiments investigated the way acoustic markers of prominence influence the grouping of speech sequences by adults and 7-month-old infants. In the first experiment, adults were familiarized with and asked to memorize sequences of adjacent syllables that alternated in either pitch or duration. During the test phase, participants heard pairs of syllables with constant pitch and duration and were asked whether the syllables had appeared adjacently during familiarization. Adults were better at remembering pairs of syllables that during familiarization had short syllables preceding long syllables, or high-pitched syllables preceding low-pitched syllables. In the second experiment, infants were familiarized and tested with similar stimuli as in the first experiment, and their preference for pairs of syllables was accessed using the head-turn preference paradigm.When familiarized with syllables alternating in pitch, infants showed a preference to listen to pairs of syllables that had high pitch in the first syllable. However, no preference was found when the familiarization stream alternated in duration. It is proposed that these perceptual biases help infants and adults find linguistic units in the continuous speech stream.While the bias for grouping based on pitch appears early in development, biases for durational grouping might rely on more extensive linguistic experience.
Ricardo A H Bion; Silvia Benavides-Varela; Marina Nespor
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Language and speech     Volume:  54     ISSN:  0023-8309     ISO Abbreviation:  Lang Speech     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-04-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985214R     Medline TA:  Lang Speech     Country:  England    
Other Details:
Languages:  eng     Pagination:  123-40     Citation Subset:  IM    
Department of Psychology, Stanford University, Jordan Hall, Building 420, Stanford, CA 94305, USA.
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