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Perseverations and switching during a verbal fluency task
Alzheimer's & Dementia, 2023AbstractBackgroundPerseverations during a verbal fluency task can be immediate or delayed. There is a general agreement that delayed perseveration may occur due to impaired working memory (WM). However, experiments to establish this have been complex and time consuming.
Neha Dubey, Jayanti Basu, Amitabha Ghosh
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Verbal fluency task equivalence
The Clinical Neuropsychologist, 1996Abstract The research and clinical use of the verbal fluency paradigm has been hindered by the paucity of information on the equivalency of the various versions of this measure. Currently, the comparability of the two most commonly used forms of the letter fluency task, the “FAS” and “CFL” tests, is uncertain.
Maureen A. Lacy +5 more
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Children's Production on Verbal and Non-Verbal Fluency Tasks
Perceptual and Motor Skills, 1982Children aged 6 to 13 yr. were given verbal and non-verbal fluency tasks as well as the Vocabulary and Block Design subtests of the WISC-R. The results, providing normative data, showed that the fluency tasks are age-, but not sex-dependent, and are only modestly correlated to one another and to standard measures of intelligence.
M, Regard, E, Strauss, P, Knapp
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Verbal fluency and verbal comprehension abilities in synonym tasks
Intelligence, 1996Abstract Generating different synonym candidates and evaluating these candidates with respect to their synonymy with the stimulus word are two components of solving an open synonym task, which requires giving synonyms for a given word (cf. Janssen, Hoskens, & De Boeck, 1993). Separate subtasks were designed to identify these components.
Rianne Janssen +2 more
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Neuromagnetic cortical desynchronization during verbal fluency task
International Congress Series, 2005Abstract Objective We aimed to investigate temporal and spatial dynamics of beta band desynchronization during verbal fluency task (VFT), which is known to reflect one of the frontal lobe functions. Method Ten healthy right-handed volunteers participated.
Kazuhiro Shishida +6 more
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Switching and clustering in verbal fluency tasks throughout childhood
Journal of Clinical and Experimental Neuropsychology, 2008An analysis of switching and clustering in fluency tasks was conducted on data from 180 Hebrew speakers aged 8-29. On the phonemic task, total output, number of switches, and number of clusters differed significantly across age groups and increased with age, whereas mean cluster size did not. On the semantic task, all measures increased with age.
Gitit, Kave +2 more
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Differential Effects of Aging on Two Verbal Fluency Tasks
Perceptual and Motor Skills, 1993The effect of age on verbal fluency was studied in 84 healthy volunteers, ages 45 to 91 years, who performed letter-fluency and semantic-fluency tasks. Older subjects (75 to 91 yr.) performed as well as younger (50 to 64 yr.) on letter fluency but did significantly worse on semantic category fluency.
R, Tomer, B E, Levin
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Clustering strategies on tasks of verbal fluency in Parkinson's disease
Neuropsychologia, 1992The verbal output of patients with Parkinson's disease (PD) was analyzed for semantic and phonemic clusters on tasks of verbal fluency. One task required cued retrieval by semantic category (i.e. animals), and one required non-cued retrieval by initial letter (e.g. words beginning with 'F'). Nondemented PD patients (N = 25) produced significantly fewer
S A, Raskin, M, Sliwinski, J C, Borod
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Sex differences in clustering and switching in verbal fluency tasks
Journal of the International Neuropsychological Society, 2006Sex differences in executive speech tasks, favoring women, have been noted in behavioral studies and functional imaging studies. In the present study, the clustering and switching components of semantic and phonemic verbal fluency tests were examined in 40 healthy men and 40 healthy women.
Elisabeth M, Weiss +5 more
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Reduced Prefrontal Oxygenation in Alzheimer Disease During Verbal Fluency Tasks
The American Journal of Geriatric Psychiatry, 2008Near-infrared spectroscopy (NIRS) is an optical method to measure changes in the concentration of oxygenated hemoglobin (O(2)Hb) and deoxygenated hemoglobin (HHb) in the vascular system of the brain tissue. Because NIRS is easy to assess and does not have any side effects, it seems perfectly suitable for functional measurements in psychiatric patients ...
Martin J, Herrmann +4 more
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