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Effects of Semantic Weight on Verb R...

Morean, Diane F.

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Effects of Semantic Weight on Verb Recognition and Retrieval in Aphasia: Implications for the Lexical-Conceptual Structure of Verbs.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Effects of Semantic Weight on Verb Recognition and Retrieval in Aphasia: Implications for the Lexical-Conceptual Structure of Verbs./
Author:	Morean, Diane F.
Description:	120 p.
Notes:	Source: Dissertation Abstracts International, Volume: 74-05(E), Section: A.
Contained By:	Dissertation Abstracts International74-05A(E).
Subject:	Communication. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3547869
ISBN:	9781267829917

Effects of Semantic Weight on Verb Recognition and Retrieval in Aphasia: Implications for the Lexical-Conceptual Structure of Verbs.
Morean, Diane F.

Effects of Semantic Weight on Verb Recognition and Retrieval in Aphasia: Implications for the Lexical-Conceptual Structure of Verbs. - 120 p.

Source: Dissertation Abstracts International, Volume: 74-05(E), Section: A.

Thesis (Ph.D.)--Northwestern University, 2012.

This item is not available from ProQuest Dissertations & Theses.

The majority of people with aphasia experience word retrieval difficulties. Individuals with fluent anomic aphasia have more difficulty with nouns; while individuals with nonfluent agrammatic aphasia have more difficulty with verbs, though this dissociation is not absolute. The purpose of this thesis was to explore the effects of the semantic complexity of verbs in aphasia, and to gain a better understanding of the lexical-conceptual structure of verbs in the mental lexicon.

ISBN: 9781267829917Subjects--Topical Terms:

524709
Communication.

Effects of Semantic Weight on Verb Recognition and Retrieval in Aphasia: Implications for the Lexical-Conceptual Structure of Verbs.
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100 1 $a Morean, Diane F. $3 3186805
245 1 0 $a Effects of Semantic Weight on Verb Recognition and Retrieval in Aphasia: Implications for the Lexical-Conceptual Structure of Verbs.
300 $a 120 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-05(E), Section: A.
500 $a Adviser: Steven G. Zecker.
502 $a Thesis (Ph.D.)--Northwestern University, 2012.
506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a The majority of people with aphasia experience word retrieval difficulties. Individuals with fluent anomic aphasia have more difficulty with nouns; while individuals with nonfluent agrammatic aphasia have more difficulty with verbs, though this dissociation is not absolute. The purpose of this thesis was to explore the effects of the semantic complexity of verbs in aphasia, and to gain a better understanding of the lexical-conceptual structure of verbs in the mental lexicon.
520 $a Experiment one examined the effects of semantic weight on verb recognition of category exemplars in aphasia through lexical decision. Individuals with nonfluent agrammatic aphasia, fluent anomic aphasia, and a group of age-matched controls participated in an online lexical decision task where real word targets were either semantically light (typical) or heavy (atypical) verbs of the motion, possession, or distracter verb categories. Accuracy and reaction times to judge whether the target was a word were measured. All three groups performed with greater accuracy and faster reaction times on light verbs than heavy verbs and on real verbs as opposed to pseudo-verbs. Individuals with aphasia made the most errors overall and were significantly slower than age-matched controls.
520 $a Experiment two examined the effects of semantic weight on verb retrieval of category exemplars in aphasia through a story completion task. Three-sentence stories were controlled for factors of rehearsal repetition, recall, syntactic pressure, and semantic feature weight. Individuals with nonfluent agrammatic aphasia, fluent anomic aphasia, and a group of age-matched controls participated in a verb story completion task to elicit target production of either semantically light (typical) or heavy (atypical) verbs. The number of target verbs produced was recorded within and between participant groups. Overall production of light and heavy verbs was also calculated for each group, and error analysis was performed within and between groups. Contrary to prior findings, all three groups retrieved light and heavy verbs with equal accuracy, showed equivalent overall production of light and heavy verbs, and produced light and heavy substitution errors at nearly an identical rate. Results of the lexical decision and story completion tasks are discussed with relevance to a proposed prototype model of verb typicality..
590 $a School code: 0163.
650 4 $a Communication. $3 524709
650 4 $a Speech therapy. $3 520446
650 4 $a Neurosciences. $3 588700
690 $a 0459
690 $a 0460
690 $a 0317
710 2 $a Northwestern University. $b Communication Sciences and Disorders. $3 1685436
773 0 $t Dissertation Abstracts International $g 74-05A(E).
790 $a 0163
791 $a Ph.D.
792 $a 2012
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3547869