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Word segmentation during infancy: Th...

Johnson, Elizabeth Kay.

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Word segmentation during infancy: The role of subphonemic cues to word boundaries.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Word segmentation during infancy: The role of subphonemic cues to word boundaries./
Author:	Johnson, Elizabeth Kay.
Description:	115 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-02, Section: B, page: 0984.
Contained By:	Dissertation Abstracts International64-02B.
Subject:	Psychology, Developmental. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3080693

Word segmentation during infancy: The role of subphonemic cues to word boundaries.
Johnson, Elizabeth Kay.

Word segmentation during infancy: The role of subphonemic cues to word boundaries. - 115 p.

Source: Dissertation Abstracts International, Volume: 64-02, Section: B, page: 0984.

Thesis (Ph.D.)--The Johns Hopkins University, 2003.

English-learning infants segment words from fluent speech by 7.5 months. Recent research suggests 7.5-month-olds use only two types of segmentation cues: word-initial stress and transitional probabilities between syllables. The current work explores the possibility that infants also use subphonemic cues to segment speech. Subphonemic cues are defined as any sort of structure-dependent acoustic-phonetic variation that does not change the phonemic identity of affected segments. The Headturn Preference Procedure was used in all three studies reported. Females who were naive to the purpose of the experiments recorded all stimuli.Subjects--Topical Terms:

1017557
Psychology, Developmental.

Word segmentation during infancy: The role of subphonemic cues to word boundaries.
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035 $a (UnM)AAI3080693
035 $a AAI3080693
040 $a UnM $c UnM
100 1 $a Johnson, Elizabeth Kay. $3 1952648
245 1 0 $a Word segmentation during infancy: The role of subphonemic cues to word boundaries.
300 $a 115 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-02, Section: B, page: 0984.
500 $a Adviser: Gregory Ball.
502 $a Thesis (Ph.D.)--The Johns Hopkins University, 2003.
520 $a English-learning infants segment words from fluent speech by 7.5 months. Recent research suggests 7.5-month-olds use only two types of segmentation cues: word-initial stress and transitional probabilities between syllables. The current work explores the possibility that infants also use subphonemic cues to segment speech. Subphonemic cues are defined as any sort of structure-dependent acoustic-phonetic variation that does not change the phonemic identity of affected segments. The Headturn Preference Procedure was used in all three studies reported. Females who were naive to the purpose of the experiments recorded all stimuli.
520 $a In the first two experiments in Chapter 2, infants were familiarized to two passages, each containing a trisyllabic two-word sequence. Each infant heard one passage with a word boundary after the first syllable (e.g. "toe#galore"), and one passage with a word boundary after the second syllable (e.g. "dogma#lines"). Immediately following the familiarization, infants were tested on lists of three types of stimuli: intended familiar ("dogma" if familiarized with "dogma#lines"), unintended familiar ("toga" if familiarized with "toe#galore"), and unfamiliar ("gumbo" if familiarized with "dogma#lines" and "toe#galore"). Twelve-month-olds oriented significantly longer to intended familiar words than unintended or unfamiliar words, demonstrating their use of subphonemic cues to speaker intent. Weaker evidence was found for 7.5-month-olds' use of subphonemic information. In a third experiment, 12-month-olds were tested on the iambic portion rather than the trochaic portion (e.g. "galore" from "toe#galore"). This experiment found only weak evidence that infants could segment any words, and no evidence that infants segmented the intended and unintended items differently.
520 $a In Chapter 3, I describe tests of 8-month-olds' segmentation of potentially ambiguous trisyllabic words ("catalogue") and recurring three-word phrases ("cat#a#log"). As predicted, infants segmented the words but not the phrases. However, the interpretation of these experiments is not clear until further controls can be run.
520 $a In Chapter 4, I describe tests of 8-month-olds' segmentation of idiomatic versus literal phrases. This was interesting because idioms are treated as multi-word lexical units in production and processing models. As predicted, infants segmented the idioms (but not their literal counterparts) as if they were trisyllabic words.
520 $a In sum, this thesis found evidence that suggests infants may use subphonemic cues by at least 8 months.
590 $a School code: 0098.
650 4 $a Psychology, Developmental. $3 1017557
650 4 $a Psychology, Cognitive. $3 1017810
650 4 $a Psychology, Experimental. $3 517106
690 $a 0620
690 $a 0633
690 $a 0623
710 2 0 $a The Johns Hopkins University. $3 1017431
773 0 $t Dissertation Abstracts International $g 64-02B.
790 1 0 $a Ball, Gregory, $e advisor
790 $a 0098
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3080693