The influence of verb stem features on inflected word production in people with agrammatic aphasia.
Item
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Title
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The influence of verb stem features on inflected word production in people with agrammatic aphasia.
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Identifier
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AAI9830739
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identifier
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9830739
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Creator
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Meth, Margaret A.
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Contributor
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Advisers: Loraine Obler | Katherine Harris
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Date
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1998
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Language
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English
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Publisher
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City University of New York.
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Subject
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Health Sciences, Speech Pathology | Speech Communication
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Abstract
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The purpose of the present study was to determine what features of the verb stem, if any, influence correct production of an inflectional suffix in English when words are read, repeated, or produced in a sentence completion task. The stimuli were selected based on a number of phonological, morphological, and orthographic features of the verb stem. Eight agrammatic subjects participated based on subtest scores on a standardized aphasia battery (e.g., Boston Diagnostic Aphasia Evaluation (BDAE) (Goodglass and Kaplan, 1972) or The Western Aphasia Battery (WAB) (Kertesz, 1982). They were judged agrammatic by two speech language pathologists who rated their performance on the picture description subtest of the particular standardized test administered.;Subjects listened to a statement that included the verb in infinitive form. They next listened to a carrier phrase with the verb omitted and were asked to produce both the inflected verb using the third person and past tense forms (depending on the carrier phrase). In addition they read and repeated verbs in the infinitive, third person and past tense forms. Responses were tape recorded, edited and presented to normal listeners who rated them twice, once for stem correctness and once for affix correctness according to a forced choice paradigm.;Results indicate that there are effects of the stem on the ability to inflect the verb, but the presence of an affix does not influence the ability to produce the stem. The aphasic speakers' ability to affix a verb is affected by whether or not a verb-stem ends in a final consonant cluster and whether it is longer than one syllable. In their unaffixed form, stems belonging to small rhyme-gangs are easier for agrammatics to produce. Results reveal an interaction between the language-grammar and speech-production systems since the longest most difficult words to produce as stems are also the most difficult to affix.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
