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Article: Investigation of metamemory dysfunctions in first-episode schizophrenia

TitleInvestigation of metamemory dysfunctions in first-episode schizophrenia
Authors
Issue Date2006
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/schres
Citation
Schizophrenia Research, 2006, v. 81 n. 2-3, p. 247-252 How to Cite?
AbstractA number of recent studies have suggested that schizophrenia patients share metamemory deficits, particularly, a decreased ability to distinguish between errors and correct responses in terms of response confidence (i.e., decreased confidence gap): patients are over-confident in errors while at the same time being under-confident in responses that are in fact correct. This, along with increased error rates, leads to an inflation of inaccurate but confidently held memories, which has been termed knowledge corruption. Previous studies on metamemory in schizophrenia patients predominantly tested chronic patients, leaving open the possibility that metamemory deficits stem partly from increased chronicity and long-term treatment. The primary aim of the current study was to establish whether a decreased confidence gap is also detectable in first-episode schizophrenia. For this purpose, a source memory task was administered to 30 first-episode patients with a diagnosis of schizophrenia or schizophreniform disorder, and 15 healthy control subjects. During encoding, items were read aloud by the experimenter and the participant in alternating order. For the recognition phase, participants were required to state the source of the item, and their confidence in their response. In agreement with previous studies, the patients displayed a decreased confidence gap, and increased knowledge corruption relative to controls. A reduced distinction between correct and incorrect information in metacognition is proposed to be a vulnerability factor for the development of delusions in schizophrenia. © 2005 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/81609
ISSN
2015 Impact Factor: 4.453
2015 SCImago Journal Rankings: 2.304
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMoritz, Sen_HK
dc.contributor.authorWoodward, TSen_HK
dc.contributor.authorChen, Een_HK
dc.date.accessioned2010-09-06T08:19:51Z-
dc.date.available2010-09-06T08:19:51Z-
dc.date.issued2006en_HK
dc.identifier.citationSchizophrenia Research, 2006, v. 81 n. 2-3, p. 247-252en_HK
dc.identifier.issn0920-9964en_HK
dc.identifier.urihttp://hdl.handle.net/10722/81609-
dc.description.abstractA number of recent studies have suggested that schizophrenia patients share metamemory deficits, particularly, a decreased ability to distinguish between errors and correct responses in terms of response confidence (i.e., decreased confidence gap): patients are over-confident in errors while at the same time being under-confident in responses that are in fact correct. This, along with increased error rates, leads to an inflation of inaccurate but confidently held memories, which has been termed knowledge corruption. Previous studies on metamemory in schizophrenia patients predominantly tested chronic patients, leaving open the possibility that metamemory deficits stem partly from increased chronicity and long-term treatment. The primary aim of the current study was to establish whether a decreased confidence gap is also detectable in first-episode schizophrenia. For this purpose, a source memory task was administered to 30 first-episode patients with a diagnosis of schizophrenia or schizophreniform disorder, and 15 healthy control subjects. During encoding, items were read aloud by the experimenter and the participant in alternating order. For the recognition phase, participants were required to state the source of the item, and their confidence in their response. In agreement with previous studies, the patients displayed a decreased confidence gap, and increased knowledge corruption relative to controls. A reduced distinction between correct and incorrect information in metacognition is proposed to be a vulnerability factor for the development of delusions in schizophrenia. © 2005 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/schresen_HK
dc.relation.ispartofSchizophrenia Researchen_HK
dc.rightsSchizophrenia Research. Copyright © Elsevier BV.en_HK
dc.titleInvestigation of metamemory dysfunctions in first-episode schizophreniaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0920-9964&volume=81&issue=2-3&spage=247&epage=252&date=2006&atitle=Investigation+of+metamemory+dysfunctions+in+first-episode+schizophreniaen_HK
dc.identifier.emailChen, E: eyhchen@hku.hken_HK
dc.identifier.authorityChen, E=rp00392en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.schres.2005.09.004en_HK
dc.identifier.pmid16256310-
dc.identifier.scopuseid_2-s2.0-30844445819en_HK
dc.identifier.hkuros116246en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-30844445819&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume81en_HK
dc.identifier.issue2-3en_HK
dc.identifier.spage247en_HK
dc.identifier.epage252en_HK
dc.identifier.isiWOS:000235231300014-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridMoritz, S=7005488974en_HK
dc.identifier.scopusauthoridWoodward, TS=7102848867en_HK
dc.identifier.scopusauthoridChen, E=7402315729en_HK

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