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Article: Production of grammatical morphemes in Cantonese aphasia

TitleProduction of grammatical morphemes in Cantonese aphasia
Authors
Issue Date2002
PublisherPsychology Press. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/02687038.asp
Citation
Aphasiology, 2002, v. 16 n. 7, p. 693-714 How to Cite?
AbstractBackground: The manifestation of impaired production of closed-class morphemes in Chinee aphasia has been examined in recent years (Lu, 1994; Packard, 1990, 1993; Tzeng, Chen, & Hung, 1991; Yiu & Worrall, 1996). However, these studies employed tasks that either allowed the patients to use avoidance strategies to conceal their impairment or modelled the target morphemes and thus provided cues to the patient. Hence, a contextually highly constrained task was used in this study. Aims: This study aimed at confirming previous observations regarding continuity across clinical types in grammatical morpheme production, dissociable performances among markers of the same morpheme category and among homophonous functors serving different functions, and to identify factors determining the accessibility of grammatical morphemes. Methods & procedures: The Cloze test without modelling of target morphemes was employed. A wide range of functors were examined including: aspect markers, negative markers; classifiers with sub-types of verbal, sortal, container, and collective classifiers; pronouns encompassing personal, predicative, and adverbial pronouns; coverbs; structural particles including the nominative, adjectival, and adverbial particles, and one modal particle; and structural suffixes including one associated with descriptive complements and one with resultative complements. Six fluent and four non-fluent Cantonese-speaking aphasic patients were involved. They suffered either a head trauma or a unilateral left CVA at least 6 months prior to the first test session. Outcomes amp; Results: The main findings were largely consistent with previous reports: (1) Pronouns, coverbs, structural and modal particles, and structural suffixes presented greater difficulty to the patients than aspects markers, negative markers and classifiers. (2) Dissociations in performance were found among different members of the same category and between homophonouns morphemes serving different functions. (3) Performances of the fluent and non-fluent groups differed quantitatively rather than qualitatively, with better performance on all categories by the fluent group. (4) Neither substitutions nor omissions dominated the error patterns of either aphasia group. Conclusions: The results confirm previous observations that the difference between fluent and non-fluent aphasic patients with regard to the production of grammatical morphemes is non-categorical, and that morphemes of the same category and homophonouns markers of different functions may present different degrees of difficulty to the patients. Furthermore, factors including global vs local relationships, conceptual complexity, semantic value, frequency of occurrence, and optionality of occurrence may help determine the relative accessibility of functors.
Persistent Identifierhttp://hdl.handle.net/10722/82631
ISSN
2015 Impact Factor: 1.139
2015 SCImago Journal Rankings: 0.730
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLaw, SPen_HK
dc.contributor.authorCheng, MYen_HK
dc.date.accessioned2010-09-06T08:31:33Z-
dc.date.available2010-09-06T08:31:33Z-
dc.date.issued2002en_HK
dc.identifier.citationAphasiology, 2002, v. 16 n. 7, p. 693-714en_HK
dc.identifier.issn0268-7038en_HK
dc.identifier.urihttp://hdl.handle.net/10722/82631-
dc.description.abstractBackground: The manifestation of impaired production of closed-class morphemes in Chinee aphasia has been examined in recent years (Lu, 1994; Packard, 1990, 1993; Tzeng, Chen, & Hung, 1991; Yiu & Worrall, 1996). However, these studies employed tasks that either allowed the patients to use avoidance strategies to conceal their impairment or modelled the target morphemes and thus provided cues to the patient. Hence, a contextually highly constrained task was used in this study. Aims: This study aimed at confirming previous observations regarding continuity across clinical types in grammatical morpheme production, dissociable performances among markers of the same morpheme category and among homophonous functors serving different functions, and to identify factors determining the accessibility of grammatical morphemes. Methods & procedures: The Cloze test without modelling of target morphemes was employed. A wide range of functors were examined including: aspect markers, negative markers; classifiers with sub-types of verbal, sortal, container, and collective classifiers; pronouns encompassing personal, predicative, and adverbial pronouns; coverbs; structural particles including the nominative, adjectival, and adverbial particles, and one modal particle; and structural suffixes including one associated with descriptive complements and one with resultative complements. Six fluent and four non-fluent Cantonese-speaking aphasic patients were involved. They suffered either a head trauma or a unilateral left CVA at least 6 months prior to the first test session. Outcomes amp; Results: The main findings were largely consistent with previous reports: (1) Pronouns, coverbs, structural and modal particles, and structural suffixes presented greater difficulty to the patients than aspects markers, negative markers and classifiers. (2) Dissociations in performance were found among different members of the same category and between homophonouns morphemes serving different functions. (3) Performances of the fluent and non-fluent groups differed quantitatively rather than qualitatively, with better performance on all categories by the fluent group. (4) Neither substitutions nor omissions dominated the error patterns of either aphasia group. Conclusions: The results confirm previous observations that the difference between fluent and non-fluent aphasic patients with regard to the production of grammatical morphemes is non-categorical, and that morphemes of the same category and homophonouns markers of different functions may present different degrees of difficulty to the patients. Furthermore, factors including global vs local relationships, conceptual complexity, semantic value, frequency of occurrence, and optionality of occurrence may help determine the relative accessibility of functors.en_HK
dc.languageengen_HK
dc.publisherPsychology Press. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/02687038.aspen_HK
dc.relation.ispartofAphasiologyen_HK
dc.rightsAphasiology. Copyright © Psychology Press.en_HK
dc.titleProduction of grammatical morphemes in Cantonese aphasiaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0268-7038&volume=16&issue=7&spage=693&epage=714&date=2002&atitle=Production+of+grammatical+morphemes+in+Cantonese+aphasiaen_HK
dc.identifier.emailLaw, SP: splaw@hku.hken_HK
dc.identifier.authorityLaw, SP=rp00920en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1080/02687040143000807en_HK
dc.identifier.scopuseid_2-s2.0-0036074944en_HK
dc.identifier.hkuros67985en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036074944&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume16en_HK
dc.identifier.issue7en_HK
dc.identifier.spage693en_HK
dc.identifier.epage714en_HK
dc.identifier.isiWOS:000176315900002-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLaw, SP=7202242088en_HK
dc.identifier.scopusauthoridCheng, MY=7402260821en_HK

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