A comparison of clustering solutions for cognitive heterogeneity in schizophrenia

1998 ◽  
Vol 4 (4) ◽  
pp. 353-362 ◽  
Author(s):  
GERALD GOLDSTEIN ◽  
DANIEL N. ALLEN ◽  
BRENT E. SEATON
Keyword(s):  
Significant Degree ◽  
Wisconsin Card Sorting Test ◽  
Card Sorting ◽  
Schizophrenic Patients ◽  
Trail Making ◽  
Wisconsin Card Sorting ◽  
Cognitive Heterogeneity ◽  
Cluster Analytic ◽  
Degree Of Association ◽  
Sorting Test

A cluster analytic solution based upon a battery of tests consisting of the Halstead Category and Tactual Performance Tests, the Trail Making Test, and the Wisconsin Card Sorting Test was compared with a solution based on the subtests of the Wechsler intelligence scales, utilizing a sample of 221 schizophrenic patients. Both analyses permitted four-cluster solutions, and we found a weak but significant degree of association between solutions. Examination of external validity of the two solutions revealed stronger associations with clinical variables for the Wechsler-scale-based solution. The major conclusions were that the existence of cognitive heterogeneity in schizophrenia exists across a broad range of abilities, and appears to reflect a combination of continuity of ability level and existence of possible subtypes requiring further neuropsychological and neurobiological verification. (JINS, 1998, 4, 353–362.)

INECO Frontal Screening: an Instrument to assess Executive Dysfunction in Schizophrenia

2014 ◽  
Vol 17 ◽  
Author(s):  
Tânia Silva ◽  
Luís Monteiro ◽  
Emanuela Lopes
Keyword(s):  
Executive Dysfunction ◽  
Wisconsin Card Sorting Test ◽  
Screening Tools ◽  
Control Group ◽  
Healthy Controls ◽  
Card Sorting ◽  
Schizophrenic Patients ◽  
Wisconsin Card Sorting ◽  
Sorting Test ◽  
Experimental Group

AbstractAlthough several brief sensitive screening tools are available to detect executive dysfunction, few have been developed to quickly assess executive functioning. The INECO Frontal Screening (IFS) is a brief tool which has proved be useful for the assessment of the executive functions in patients with dementia. The aim of this study was to explore whether the IFS is as sensitive and specific as the BADS, a battery designed to assess the dysexecutive syndrome, in schizophrenia. Our sample comprised a group of 34 schizophrenic patients (Mean age = 39.59, DP = 10.697) and 31 healthy controls (Mean age = 35.52, DP = 10.211). To all groups were administered the BADS, Wisconsin Card Sorting Test and IFS. The results suggest that schizophrenic patients performed significantly worse than the control group in all tests (p < .05). The IFS total score was 13.29 for the experimental group and 26.21 for the control group (p < .001). Considering a cut-off of 14 points, the IFS sensitivity was 100% and specificity 56% in detection of executive dysfunction in schizophrenia, compared with the BADS, that if we consider a cut-off of 11 points, was a sensitivity of 100% and a specificity of 50%. Thus, IFS is a brief, sensitive and specific tool for the detection of executive dysfunction in schizophrenia.

Hypofrontality in neuroleptic-naive schizophrenic patients during the Wisconsin Card Sorting Test - a fMRI study

2001 ◽  
Vol 251 (2) ◽  
pp. 66-71 ◽  
Author(s):  
Stefan Riehemann ◽  
Hans-Peter Volz ◽  
Peggy Stützer ◽  
Stefan Smesny ◽  
Christian Gaser ◽  
...  
Keyword(s):  
Wisconsin Card Sorting Test ◽  
Card Sorting ◽  
Fmri Study ◽  
Schizophrenic Patients ◽  
Wisconsin Card Sorting ◽  
Sorting Test

FUNCTIONAL NEUROANATOMY OF THE WISCONSIN CARD SORTING TEST IN SCHIZOPHRENIC PATIENTS: AN EVENT-RELATED 3T fMRI STUDY

2008 ◽  
Vol 102 (1-3) ◽  
pp. 91
Author(s):  
Patricia Ohrmann ◽  
Andreas Wilmsmeier ◽  
Jochen Bauer ◽  
Ansgar Siegmund ◽  
Thomas Suslow ◽  
...  
Keyword(s):  
Wisconsin Card Sorting Test ◽  
Functional Neuroanatomy ◽  
Card Sorting ◽  
Fmri Study ◽  
Schizophrenic Patients ◽  
Wisconsin Card Sorting ◽  
Sorting Test

Is executive function distinguishing schizophrenia from bipolar disorder?

2011 ◽  
Vol 26 (S2) ◽  
pp. 1419-1419
Author(s):  
M.R. Khodaee ◽  
M.K. Derakhshan ◽  
A. Khodabakhshi Kooalee
Keyword(s):  
Executive Function ◽  
Educational Status ◽  
Wisconsin Card Sorting Test ◽  
Card Sorting ◽  
Schizophrenic Patients ◽  
Bipolar Type ◽  
Patient Groups ◽  
Wisconsin Card Sorting ◽  
Sorting Test

ObjectivesThere is an evidence for differential executive function in bipolar type 1 disorder (B1D) and schizophrenia that may tend different cognitive deficits and abnormalities. The objective of this study was to compare the executive function of B1D and schizophrenic patients.MethodWe studied 50 patients with B1D, and 50 schizophrenic participants. All participants completed the Wisconsin Card Sorting Test (WCST) of the Persian version. The participants were match in three basic variables which had most contributions in cognitive conditions in patients. They were Age, educational status and period of illness.ResultsThe two patient groups had compared performance on the WCST. In the WCST, schizophrenic patients showed impairment executive function more than B1D patients.ConclusionsFindings indicated that schizophrenic patients had more dysfunctions executive function than the Bipolar type 1 disorder patients. Although, both disorders may show the impairment in executive function, but the dysfunction in schizophrenia greater than bipolar type 1disorder patients.

scholarly journals Detecção de simulação com o uso do wisconsin card sorting test e do trail making test

2013 ◽  
Vol 29 (1) ◽  
pp. 15-20
Author(s):  
Hugo Sousa ◽  
Manuel Machado ◽  
Jorge Quintas
Keyword(s):  
Wisconsin Card Sorting Test ◽  
Trail Making Test ◽  
Card Sorting ◽  
Trail Making ◽  
Wisconsin Card Sorting ◽  
Sorting Test

Neste trabalho, tentamos identificar índices de simulação na avaliação neuropsicológica forense, através da avaliação dos padrões de resposta em provas neuropsicológicas. A amostra foi constituída por 56 sujeitos com traumatismo crânioencefálico. Todos se encontravam numa situação de possível recompensa monetária por incapacidade. Utilizamos os instrumentos Wisconsin Card Sorting Test (WCST), Trail Making Test (TMT), Inventário de Sintomas Psicopatológicos (BSI), e a grelha de análise dos autos do processo. Cerca de 30% da amostra enquadrou-se no grupo de prováveis simuladores. Essa porcentagem é congruente com a literatura. Verificou-se uma grande homogeneidade entre os indivíduos com e sem indicadores de simulação, a nível sintomatológico e características sócio-demográficas, o que reforça a necessidade de desenvolvimento de métodos eficazes na detecção da simulação.

Perseveration in schizophrenic patients: a neuropsychological approach for research

2000 ◽  
Vol 12 (1) ◽  
pp. 27-31 ◽  
Author(s):  
M.G. Lanser ◽  
B.A. Ellenbroek ◽  
A.R. Cools ◽  
F.G. Zitman
Keyword(s):  
Wisconsin Card Sorting Test ◽  
Set Shifting ◽  
Card Sorting ◽  
Frontal Lobe Lesions ◽  
Schizophrenic Patients ◽  
Wisconsin Card Sorting ◽  
Animal Part ◽  
Sorting Test ◽  
Maintenance Problem

SUMMARYPerseveration is a core symptom of schizophrenia, the cause, however, is unknown. It has been shown that for people with frontal lobe lesions, perseveration can be explained with a set-maintenance problem. Perseveration in Parkinson's disease can be explained with problems shifting from one set to another without cues (set-shifting). These disorders can be distinguished using a two-choice task and the Wisconsin Card Sorting Test, that is analysed in phases. Analogs of these tests can be used in animal research. By adding an animal part to the human research, more insight can be gained into the role of specific brain areas in set-maintenance and set-shifting.

Sign in / Sign up

Export Citation Format

Share Document