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Article: Semantic memory is both impaired and anomalous in schizophrenia

TitleSemantic memory is both impaired and anomalous in schizophrenia
Authors
Issue Date1994
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=PSM
Citation
Psychological Medicine, 1994, v. 24 n. 1, p. 193-202 How to Cite?
AbstractThe integrity of semantic memory in schizophrenia was examined in a reaction time task requiring subjects to verify words as members or non-members of a conceptual category, where the words differed in their degree of semantic relationship to the category. Compared to matched normal controls, 28 schizophrenic patients were impaired on the task, showing slower responses in all conditions. In addition, their performance was anomalous in that they took longest to respond to items that were outside the category but semantically related to it, in contrast to the controls who took the longest to respond to ambiguous words at the borderline of the category. The pattern of 'yes' and 'no' responses of the patients was anomalous in a similar way. In both speed and accuracy of responding, the findings indicate that there is an outward shift of semantic category boundaries in schizophrenia.
Persistent Identifierhttp://hdl.handle.net/10722/171882
ISSN
2015 Impact Factor: 5.491
2015 SCImago Journal Rankings: 2.843
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChen, EYHen_US
dc.contributor.authorWilkins, AJen_US
dc.contributor.authorMckenna, PJen_US
dc.date.accessioned2012-10-30T06:18:09Z-
dc.date.available2012-10-30T06:18:09Z-
dc.date.issued1994en_US
dc.identifier.citationPsychological Medicine, 1994, v. 24 n. 1, p. 193-202en_US
dc.identifier.issn0033-2917en_US
dc.identifier.urihttp://hdl.handle.net/10722/171882-
dc.description.abstractThe integrity of semantic memory in schizophrenia was examined in a reaction time task requiring subjects to verify words as members or non-members of a conceptual category, where the words differed in their degree of semantic relationship to the category. Compared to matched normal controls, 28 schizophrenic patients were impaired on the task, showing slower responses in all conditions. In addition, their performance was anomalous in that they took longest to respond to items that were outside the category but semantically related to it, in contrast to the controls who took the longest to respond to ambiguous words at the borderline of the category. The pattern of 'yes' and 'no' responses of the patients was anomalous in a similar way. In both speed and accuracy of responding, the findings indicate that there is an outward shift of semantic category boundaries in schizophrenia.en_US
dc.languageengen_US
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=PSMen_US
dc.relation.ispartofPsychological Medicineen_US
dc.subject.meshAdulten_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshLanguage Disorders - Diagnosis - Etiologyen_US
dc.subject.meshLanguage Testsen_US
dc.subject.meshMaleen_US
dc.subject.meshMemory Disorders - Etiologyen_US
dc.subject.meshSchizophreniaen_US
dc.subject.meshSchizophrenic Psychologyen_US
dc.subject.meshSemanticsen_US
dc.titleSemantic memory is both impaired and anomalous in schizophreniaen_US
dc.typeArticleen_US
dc.identifier.emailChen, EYH:eyhchen@hku.hken_US
dc.identifier.authorityChen, EYH=rp00392en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1017/S0033291700026957-
dc.identifier.pmid8208884-
dc.identifier.scopuseid_2-s2.0-0028328319en_US
dc.identifier.volume24en_US
dc.identifier.issue1en_US
dc.identifier.spage193en_US
dc.identifier.epage202en_US
dc.identifier.isiWOS:A1994ND27600020-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridChen, EYH=7402315729en_US
dc.identifier.scopusauthoridWilkins, AJ=7101620795en_US
dc.identifier.scopusauthoridMcKenna, PJ=7201921663en_US

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