The vowel lengthening exaggeration effect in speakers with apraxia of speech: Compensation, artifact, or primary deficit?

Rogers, Margaret A.. (1997) The vowel lengthening exaggeration effect in speakers with apraxia of speech: Compensation, artifact, or primary deficit? [Journal (Paginated)]

[img] PDF
26-10.pdf

Download (1MB)

Abstract

Vowel duration functions contrastively in English to signal the voicing feature of syllable-final stop consonants. This study examines three hypotheses posited to explain why speakers with apraxia of speech and a concomitant aphasia exhibit an exaggerated vowel lengthening effect relative to speakers with dysarthria, aphasia without apraxia and controls. The investigation addresses the hypotheses that the vowel lengthening exaggeration effect is attributable to: (1) a compensatory strategy, (2) an artifact of slow speaking rate, (3) the concomitant language impairment, or (4) a primary deficit reflecting the underlying nature of the apraxia disorder. The results do not support the first three of these hypotheses. It is hypothesized that the temporal measures most likely to reveal abnormalities which are uniquely characteristic of speakers with apraxia of speech are those which are relational in nature, either with respect to inter- articulator timing or contrastive durations.

Item Type: Journal (Paginated)
Additional Information: Copyright by Taylor & Francis Ltd. Used with permission.
Uncontrolled Keywords: DURATION; APHASIA
Depositing User: Demetrios Ioannides
Date Deposited: 22 Sep 2003
Last Modified: 03 Jun 2016 12:53
Conference: Clinical Aphasiology Conference > Clinical Aphasiology Conference (1996 : 26th : Newport, RI : June 1996)
Conference Date: June 1996
Location: Newport, R.I.
Publisher: Taylor & Francis
Journal or Publication Title: Aphasiology
Volume: 11
Number: 4-5
Publication Location: London
ISSN: 1464-5041
URI: http://eprints-prod-05.library.pitt.edu/id/eprint/1110

Actions (login required)

View Item View Item