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Article: The components of executive functioning in a cohort of patients with chronic schizophrenia: A multiple single-case study design

TitleThe components of executive functioning in a cohort of patients with chronic schizophrenia: A multiple single-case study design
Authors
KeywordsExecutive function
Fractionation
Schizophrenia
Supervisory attention
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. 173-189 How to Cite?
Abstract
We examined the fractionation of executive functioning performance in ninety patients with schizophrenia, who were tested for initiation, sustained attention, switching/flexibility, attention allocation and impulsivity/ disinhibition. The participants were also given tests of general intelligence and memory. We analysed the executive functioning performance of individual patients against normative data from our laboratory, and summary scores for all of the executive functioning components were computed. For each component, participants were classified as having impairment with a test performance of 1.5 standard deviations or more from the norm of the corresponding test. Of all of the participants, 27.8% (n = 25) demonstrated poor performance in all of the components, and 5.6 % (n = 5) exhibited intact or fair performance in all of the components. Furthermore, 18.9% (n = 17) showed intact or fair performance in one component, 16.7% (n = 15) in two components, 21.1% (n = 19) in three components and 10% (n = 9) in four components. The groups did not differ in education, gender or duration of illness, but the group that showed impaired performance in all of the components demonstrated the most severe psychotic symptoms after controlling for background intelligence, age and medication. The differential breakdown for the executive functioning performance across the participants suggests that the fractionation of central executive functioning occurs in schizophrenia. © 2005 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/81651
ISSN
2013 Impact Factor: 4.426
2013 SCImago Journal Rankings: 3.163
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, RCKen_HK
dc.contributor.authorChen, EYHen_HK
dc.contributor.authorCheung, EFCen_HK
dc.contributor.authorChen, RYLen_HK
dc.contributor.authorCheung, HKen_HK
dc.date.accessioned2010-09-06T08:20:21Z-
dc.date.available2010-09-06T08:20:21Z-
dc.date.issued2006en_HK
dc.identifier.citationSchizophrenia Research, 2006, v. 81 n. 2-3, p. 173-189en_HK
dc.identifier.issn0920-9964en_HK
dc.identifier.urihttp://hdl.handle.net/10722/81651-
dc.description.abstractWe examined the fractionation of executive functioning performance in ninety patients with schizophrenia, who were tested for initiation, sustained attention, switching/flexibility, attention allocation and impulsivity/ disinhibition. The participants were also given tests of general intelligence and memory. We analysed the executive functioning performance of individual patients against normative data from our laboratory, and summary scores for all of the executive functioning components were computed. For each component, participants were classified as having impairment with a test performance of 1.5 standard deviations or more from the norm of the corresponding test. Of all of the participants, 27.8% (n = 25) demonstrated poor performance in all of the components, and 5.6 % (n = 5) exhibited intact or fair performance in all of the components. Furthermore, 18.9% (n = 17) showed intact or fair performance in one component, 16.7% (n = 15) in two components, 21.1% (n = 19) in three components and 10% (n = 9) in four components. The groups did not differ in education, gender or duration of illness, but the group that showed impaired performance in all of the components demonstrated the most severe psychotic symptoms after controlling for background intelligence, age and medication. The differential breakdown for the executive functioning performance across the participants suggests that the fractionation of central executive functioning occurs 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.subjectExecutive functionen_HK
dc.subjectFractionationen_HK
dc.subjectSchizophreniaen_HK
dc.subjectSupervisory attentionen_HK
dc.titleThe components of executive functioning in a cohort of patients with chronic schizophrenia: A multiple single-case study designen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0920-9964&volume=81&issue=2-3&spage=173&epage=189&date=2006&atitle=The+components+of+executive+functioning+in+a+cohort+of+patients+with+chronic+schizophrenia:+a+multiple+single-case+study+designen_HK
dc.identifier.emailChen, EYH: eyhchen@hku.hken_HK
dc.identifier.authorityChen, EYH=rp00392en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.schres.2005.08.011en_HK
dc.identifier.pmid16188430en_HK
dc.identifier.scopuseid_2-s2.0-30844451588en_HK
dc.identifier.hkuros116244en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-30844451588&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume81en_HK
dc.identifier.issue2-3en_HK
dc.identifier.spage173en_HK
dc.identifier.epage189en_HK
dc.identifier.isiWOS:000235231300007-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridChan, RCK=35236280300en_HK
dc.identifier.scopusauthoridChen, EYH=7402315729en_HK
dc.identifier.scopusauthoridCheung, EFC=7006522469en_HK
dc.identifier.scopusauthoridChen, RYL=16635066600en_HK
dc.identifier.scopusauthoridCheung, HK=7201839420en_HK

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