Is semantic verbal fluency impairment explained by executive function deficits in schizophrenia?

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dc.contributor.authorBerberian A.A.
dc.contributor.authorMoraes G.V.
dc.contributor.authorGadelha A.
dc.contributor.authorBrietzke E.
dc.contributor.authorFonseca A.O.
dc.contributor.authorScarpato B.S.
dc.contributor.authorVicente M.O.
dc.contributor.authorSeabra A.G.
dc.contributor.authorBressan R.A.
dc.contributor.authorLacerda A.L.
dc.date.accessioned2024-03-13T00:53:29Z
dc.date.available2024-03-13T00:53:29Z
dc.date.issued2016
dc.description.abstract© 2016, Associacao Brasileira de Psiquiatria. All rights reserved.Objective: To investigate if verbal fluency impairment in schizophrenia reflects executive function deficits or results from degraded semantic store or inefficient search and retrieval strategies. Method: Two groups were compared: 141 individuals with schizophrenia and 119 healthy age and education-matched controls. Both groups performed semantic and phonetic verbal fluency tasks. Performance was evaluated using three scores, based on 1) number of words generated; 2) number of clustered/related words; and 3) switching score. A fourth performance score based on the number of clusters was also measured. Results: Individuals with schizophrenia produced fewer words than controls. After controlling for the total number of words produced, a difference was observed between the groups in the number of cluster-related words generated in the semantic task. In both groups, the number of words generated in the semantic task was higher than that generated in the phonemic task, although a significant group vs. fluency type interaction showed that subjects with schizophrenia had disproportionate semantic fluency impairment. Working memory was positively associated with increased production of words within clusters and inversely correlated with switching. Conclusion: Semantic fluency impairment may be attributed to an inability (resulting from reduced cognitive control) to distinguish target signal from competing noise and to maintain cues for production of memory probes.
dc.description.firstpage121
dc.description.issuenumber2
dc.description.lastpage126
dc.description.volume38
dc.identifier.doi10.1590/1516-4446-2015-1663
dc.identifier.issn1516-4446
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/35988
dc.relation.ispartofRevista Brasileira de Psiquiatria
dc.rightsAcesso Aberto
dc.subject.otherlanguageChronic psychiatric illness
dc.subject.otherlanguageCognitive neuroscience
dc.subject.otherlanguageLanguage
dc.subject.otherlanguagePsychosis
dc.subject.otherlanguageSchizophrenia
dc.titleIs semantic verbal fluency impairment explained by executive function deficits in schizophrenia?
dc.typeArtigo
local.scopus.citations25
local.scopus.eid2-s2.0-84974795056
local.scopus.subjectAdult
local.scopus.subjectCase-Control Studies
local.scopus.subjectExecutive Function
local.scopus.subjectFemale
local.scopus.subjectHumans
local.scopus.subjectLanguage Disorders
local.scopus.subjectMale
local.scopus.subjectMemory, Short-Term
local.scopus.subjectMiddle Aged
local.scopus.subjectNeuropsychological Tests
local.scopus.subjectPhonetics
local.scopus.subjectSchizophrenia
local.scopus.subjectSemantics
local.scopus.subjectVerbal Behavior
local.scopus.subjectYoung Adult
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84974795056&origin=inward
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