Title: Age-related differences in articulatory physiology among adult females
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00099333/00001
 Material Information
Title: Age-related differences in articulatory physiology among adult females
Physical Description: vii, 136 leaves : ill. ; 28 cm.
Language: English
Creator: Morris, Richard Jack, 1950- ( Dissertant )
Brown, Samuel W. ( Thesis advisor )
Hollien, Harry F. ( Reviewer )
Yang, Mark C. ( Reviewer )
Hicks, Douglas, M. ( Reviewer )
Webb, Lynne M. ( Reviewer )
Publisher: University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: 1986
Copyright Date: 1986
Subjects / Keywords: Articulation disorders   ( lcsh )
Aging   ( lcsh )
Speech thesis Ph. D
Speech -- Physiological aspects   ( lcsh )
Dissertations, academic -- Speech -- UF
Genre: bibliography   ( marcgt )
non-fiction   ( marcgt )
Abstract: The purpose of this study was to examine differences between the speech of women in two age groups, 20-30 years old and over 75 years old. Age-related differences in peak intraoral air pressure (PIO), consonant duration (CD), vowel duration (VD), voice onset time (VOT), and vocal intensity were studied. The intensity task consisted of three repetitions of sustained /Q / at three loudness levels. For the other speech tasks, consonant-vowel (CV) , vowel-consonant- vowel (VCV) , and vowel-consonant (VC) syllables were embedded in the carrier phrase "Speak again." The consonants were /p, t, b, d, s, and z/ combined with /a/. Short samples from the syllable task were played to listeners who estimated the ages of the speakers. The listeners consistently estimated ages that closely approximated the chronological age of the speakers, r=.88. Peak PIO magnitudes did not differ significantly between the young and non-denture wearing older speakers. The denture wearing older speakers exhibited higher peak PIO values for the voiceless consonants. CD values were longer among the older speakers for the test consonants except for /t/. The older speakers exhibited significant increases in VD. The older group also exhibited consistently shorter VOT values than the younger speakers, but not enough to change normal perceptual identification. For the intensity tasks the older speakers exhibited narrower intensity ranges, the range being restricted at both the minimum and maximum effort levels. All of the dependent variables exhibited greater variability among the older speakers. The conversational intensity and PIO results indicate that age-related physiologic differences do not significantly affect the pressure levels associated with normal speech. Similarly, the VOT data indicated that this parameter was not meaningfully affected by the aging process. Increased consonant and vowel durations may be related to the percept of a slower speech rate for older speakers, while the greater variability for all of the dependent variables for the older speakers may be related to the percept of less precise articulation among geriatric speakers
Thesis: Thesis (Ph. D.)--University of Florida, 1986.
Bibliography: Bibliography: leaves 115-126.
General Note: Typescript.
General Note: Vita.
Statement of Responsibility: by Richard Jack Morris.
 Record Information
Bibliographic ID: UF00099333
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: alephbibnum - 000893024
notis - AEK1535
oclc - 015279688


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