東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Patterns of onset of canonical babbl...

Lewedag, Vanessa Leigh.

Linked to FindBook

Google Book

Amazon

博客來

Patterns of onset of canonical babbling among typically developing infants.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Patterns of onset of canonical babbling among typically developing infants./
Author:	Lewedag, Vanessa Leigh.
Description:	48 p.
Notes:	Source: Dissertation Abstracts International, Volume: 56-08, Section: A, page: 3101.
Contained By:	Dissertation Abstracts International56-08A.
Subject:	Language, Linguistics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9540976

Patterns of onset of canonical babbling among typically developing infants.
Lewedag, Vanessa Leigh.

Patterns of onset of canonical babbling among typically developing infants. - 48 p.

Source: Dissertation Abstracts International, Volume: 56-08, Section: A, page: 3101.

Thesis (Ph.D.)--University of Miami, 1995.

The onset of canonical babbling (production of mature, speech-like syllables) is an important vocal developmental milestone as infants cannot begin to produce meaningful speech until they can consistently produce these syllables (Oller, 1978; Stoel-Gammon & Cooper, 1984). Certain groups of infants who are at risk for language delays (i.e. hearing-impairment) demonstrate reliably later onsets of canonical babbling (Eilers & Oller, 1993; Stoel-Gammon & Cooper, 1986). What is not known, however, is whether the onset patterns of canonical babbling in infants who are at risk for later language delays differ from the onset patterns in typically developing infants. To lay the groundwork for such comparisons, the present study evaluated the vocalization patterns of typically developing infants during the one-month period following the designated onset of canonical babbling. Analyses indicated that the infants demonstrated a small, but reliable increase in their production of canonical syllables from the pre-canonical samples to the post-canonical samples (as indicated by the canonical babbling ratios). Modifying the definition of the canonical syllable to disinclude glide elements appeared to help clarify the stage differentiation. Results indicated that number of both single canonical syllables and reduplicated syllables were reliably different between pre- and post-canonical sessions. Results also suggested that marginal babbling ratios may decrease following the onset of canonical babbling. Although the infants demonstrated tremendous variability in their amount of canonical syllables produced across sessions, a criterion ratio of.10 may be a useful compromise in determining if an infant is in the canonical stage of vocal development while minimizing the number of false positives and false negative. A previous study (Oller, Eilers, & Steffens, 1993) indicated that canonical babbling ratios gradually increase over several months following onset, but in the present study, no noticeable increase was observed across the initial month following onset. More distinct stage differentiation and clearer increases in canonical babbling ratios across the month may have been observed had the study included sampling for longer periods of time, or at closer intervals. These results provide some support for the stage theory of prelinguistic vocalization development, but indicate that changes in sampling methodology may be needed to further clarify the nature of onset of canonical babbling.Subjects--Topical Terms:

1018079
Language, Linguistics.

Patterns of onset of canonical babbling among typically developing infants.
LDR:03375nam 2200265 4500 001 1397178
005 20110719084815.5
008 130515s1995 ||||||||||||||||| ||eng d
035 $a (UMI)AAI9540976
035 $a AAI9540976
040 $a UMI $c UMI
100 1 $a Lewedag, Vanessa Leigh. $3 1675994
245 1 0 $a Patterns of onset of canonical babbling among typically developing infants.
300 $a 48 p.
500 $a Source: Dissertation Abstracts International, Volume: 56-08, Section: A, page: 3101.
500 $a Supervisor: D. Kimbrough Oller.
502 $a Thesis (Ph.D.)--University of Miami, 1995.
520 $a The onset of canonical babbling (production of mature, speech-like syllables) is an important vocal developmental milestone as infants cannot begin to produce meaningful speech until they can consistently produce these syllables (Oller, 1978; Stoel-Gammon & Cooper, 1984). Certain groups of infants who are at risk for language delays (i.e. hearing-impairment) demonstrate reliably later onsets of canonical babbling (Eilers & Oller, 1993; Stoel-Gammon & Cooper, 1986). What is not known, however, is whether the onset patterns of canonical babbling in infants who are at risk for later language delays differ from the onset patterns in typically developing infants. To lay the groundwork for such comparisons, the present study evaluated the vocalization patterns of typically developing infants during the one-month period following the designated onset of canonical babbling. Analyses indicated that the infants demonstrated a small, but reliable increase in their production of canonical syllables from the pre-canonical samples to the post-canonical samples (as indicated by the canonical babbling ratios). Modifying the definition of the canonical syllable to disinclude glide elements appeared to help clarify the stage differentiation. Results indicated that number of both single canonical syllables and reduplicated syllables were reliably different between pre- and post-canonical sessions. Results also suggested that marginal babbling ratios may decrease following the onset of canonical babbling. Although the infants demonstrated tremendous variability in their amount of canonical syllables produced across sessions, a criterion ratio of.10 may be a useful compromise in determining if an infant is in the canonical stage of vocal development while minimizing the number of false positives and false negative. A previous study (Oller, Eilers, & Steffens, 1993) indicated that canonical babbling ratios gradually increase over several months following onset, but in the present study, no noticeable increase was observed across the initial month following onset. More distinct stage differentiation and clearer increases in canonical babbling ratios across the month may have been observed had the study included sampling for longer periods of time, or at closer intervals. These results provide some support for the stage theory of prelinguistic vocalization development, but indicate that changes in sampling methodology may be needed to further clarify the nature of onset of canonical babbling.
590 $a School code: 0125.
650 4 $a Language, Linguistics. $3 1018079
650 4 $a Language, General. $3 1018089
690 $a 0290
690 $a 0679
710 2 $a University of Miami. $3 1017483
773 0 $t Dissertation Abstracts International $g 56-08A.
790 1 0 $a Oller, D. Kimbrough, $e advisor
790 $a 0125
791 $a Ph.D.
792 $a 1995
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9540976