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The effectiveness of vowel productio...

Ertmer, David Joseph.

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The effectiveness of vowel production training with real-time spectrographic displays for children with profound hearing impairment.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The effectiveness of vowel production training with real-time spectrographic displays for children with profound hearing impairment./
作者:	Ertmer, David Joseph.
面頁冊數:	112 p.
附註:	Source: Dissertation Abstracts International, Volume: 55-12, Section: B, page: 5309.
Contained By:	Dissertation Abstracts International55-12B.
標題:	Health Sciences, Speech Pathology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9512964

The effectiveness of vowel production training with real-time spectrographic displays for children with profound hearing impairment.
Ertmer, David Joseph.

The effectiveness of vowel production training with real-time spectrographic displays for children with profound hearing impairment. - 112 p.

Source: Dissertation Abstracts International, Volume: 55-12, Section: B, page: 5309.

Thesis (Ph.D.)--Purdue University, 1994.

The effectiveness of vowel production training which incorporated direct instruction in combination with spectrographic models and feedback was assessed for two children who exhibited profound hearing impairment. A multiple-baseline design across behaviors, with replication across subjects was implemented to determine if vowel production accuracy improved following the introduction of treatment. Listener judgments of vowel correctness were obtained during the baseline, training, and follow-up phases of the study. Data were analyzed through visual inspection of changes in levels of accuracy, changes in trends of accuracy, and changes in variability of accuracy within and across phases. One subject showed significant improvement of all three trained vowel targets; the second subject for the first trained target only (Kolmogorov-Smirnov Two Sample Test). Performance trends during training sessions suggest that continued treatment would have resulted in further improvement for both subjects. Vowel duration, fundamental frequency, and the frequency locations of the first and second formants were measured before and after training. Acoustic analysis revealed highly individualized changes in the frequency locations of F1 and F2. Vowels which received the most training were maintained at higher levels than those which were introduced later in training, Some generalization of practiced vowel targets to untrained words was observed in both subjects. A bias towards judging productions as "correct" was observed for both subjects during self-evaluation tasks using spectrographic feedback.Subjects--Topical Terms:

1018105
Health Sciences, Speech Pathology.

The effectiveness of vowel production training with real-time spectrographic displays for children with profound hearing impairment.
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502 $a Thesis (Ph.D.)--Purdue University, 1994.
520 $a The effectiveness of vowel production training which incorporated direct instruction in combination with spectrographic models and feedback was assessed for two children who exhibited profound hearing impairment. A multiple-baseline design across behaviors, with replication across subjects was implemented to determine if vowel production accuracy improved following the introduction of treatment. Listener judgments of vowel correctness were obtained during the baseline, training, and follow-up phases of the study. Data were analyzed through visual inspection of changes in levels of accuracy, changes in trends of accuracy, and changes in variability of accuracy within and across phases. One subject showed significant improvement of all three trained vowel targets; the second subject for the first trained target only (Kolmogorov-Smirnov Two Sample Test). Performance trends during training sessions suggest that continued treatment would have resulted in further improvement for both subjects. Vowel duration, fundamental frequency, and the frequency locations of the first and second formants were measured before and after training. Acoustic analysis revealed highly individualized changes in the frequency locations of F1 and F2. Vowels which received the most training were maintained at higher levels than those which were introduced later in training, Some generalization of practiced vowel targets to untrained words was observed in both subjects. A bias towards judging productions as "correct" was observed for both subjects during self-evaluation tasks using spectrographic feedback.
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