What is measured by verbal fluency tests in schizophrenia?

Beilen, Marije van; Pijnenborg, Marieke; Zomeren, Ed H. van; Bosch, Robert J. van den; Withaar, F.K.; Bouma, Anke

doi:10.1016/j.schres.2003.09.007

Cited by 64 publications

(50 citation statements)

References 36 publications

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“…These results are not consistent with another study [18] which is the closer to ours and concludes that neither executive functioning nor working memory predict verbal fluency in schizophrenics, whereas, in healthy subjects, these variables do predict fluency scores. Nevertheless, there could be several explanations for these differences.…”

Section: Discussioncontrasting

confidence: 99%

“…Actually, even if some studies have emphasized the relation between verbal fluency and executive functions in schizophrenia as a secondary feature ( [18]) or as a common criterion for early diagnosis ( [31,32]), it is not clear yet whether executive functioning (as a specific part of cognition) and fluency tasks are empirically linked. Furthermore, if we consider that these links exist, are they also valid for the non-verbal fluency task?…”

Section: Introductionmentioning

confidence: 99%

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Language, executive functioning and symptomatology—Is fluency a transversal tool in schizophrenia?

Rinaldi¹,

Lefèbvre²,

Trappeniers³

2013

OJPsych

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Despite a large number of studies on fluency disorders in schizophrenia, it is still not clear whether executive functioning and fluency tasks are empirically linked and how symptomatology could specifically get involved on these influences. We carried out analyses of performances in several verbal fluency tasks, a non-verbal fluency task and an executive test (FAB) in 25 schizophrenics and 25 healthy subjects matched in terms demographic data. Patients also completed the Positive and Negative Symptoms Scale in order to control for their clinical profile. Our results suggest that schizophrenic patients show both category and letter fluency deficits with a greater impairment for letter fluency. They also display poorer performances for the non-verbal fluency task. In patients, all the verbal and non-verbal fluencies are significantly correlated with the FAB total score. By contrast, in controls, only letter fluency correlates with the FAB total score, which is congruent with previous literature on the healthy mechanisms of verbal fluency. Besides, factorial analyses show that symptomatology is specifically related to particular indexes of fluency tasks. Taken together, these data lead to support the hypothesis of retrieval rather than semantic difficulties and alargest involvement of executive functioning in schizophrenics during tasks that require a certain degree of efficiency, with performance being influenced by the clinical profile. Yet, the relation between fluency scores and executive functioning has to be more intensively explored and further studies should include semantic memory measures that fit with pathology's constraints and characteristics.

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Section: Discussioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Language, executive functioning and symptomatology—Is fluency a transversal tool in schizophrenia?

Rinaldi¹,

Lefèbvre²,

Trappeniers³

2013

OJPsych

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“…The discrepancies in VFT performance have been associated with several pathological conditions, such as Alzheimer's disease (Arnaíz & Almkvist, 2003), schizophrenia (Allen, Liddle, & Frith, 1993;Beilen et al, 2004), Parkinson's disease (Monetta & Pell, 2006), depression (Videbech et al, 2003), head trauma (Curtis, Thompson, Greve, & Bianchini, 2007;Raskin & Rearick, 1996) and amyotrophic lateral sclerosis (Abrahams et al, 2000). VFTs have also been used for the differential diagnosis of Alzheimer's and semantic and ischemic vascular dementia (Elst et al, 2006;Tierney, Blach, & Szalai, 2001), right and left temporal lobe epilepsy (N'Kaoua, Lespinet, Barsse, & Clavierie, 2001) and types of dementia and depression in the elderly (Cipolotti & Maguire, 2003).…”

mentioning

confidence: 99%

Effect of aging, education, reading and writing, semantic processing and depression symptoms on verbal fluency

Moraes¹,

Guimarães²,

Joanette³

et al. 2013

Psicol. Reflex. Crit.

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Verbal fl uency tasks are widely used in (clinical) neuropsychology to evaluate components of executive functioning and lexical-semantic processing (linguistic and semantic memory). Performance in those tasks may be affected by several variables, such as age, education and diseases. This study investigated whether aging, education, reading and writing frequency, performance in semantic judgment tasks and depression symptoms predict the performance in unconstrained, phonemic and semantic fl uency tasks. This study sample comprised 260 healthy adults aged 19 to 75 years old. The Pearson correlation coeffi cient and multiple regression models were used for data analysis. The variables under analysis were associated in different ways and had different levels of contribution according to the type of verbal fl uency task. Education had the greatest effect on verbal fl uency tasks. There was a greater effect of age on semantic fl uency than on phonemic tasks. The semantic judgment tasks predicted the verbal fl uency performance alone or in combination with other variables. These fi ndings corroborate the importance of education in cognition supporting the hypothesis of a cognitive reserve and confi rming the contribution of lexical-semantic processing to verbal fl uency. Keywords: Verbal fl uency, age, education, reading and writing habits, depression, semantic judgment. ResumoAs tarefas de fl uência verbal são amplamente empregadas na clínica neuropsicológica para avaliar os componentes de funções executivas e processamento léxico-semântico (linguagem e memória semântica). O desempenho nessas tarefas pode ser infl uenciado por diferentes variáveis, como idade, escolaridade e diferentes patologias. Este estudo investigou se a idade, escolaridade, frequência dos hábitos de leitura e escrita, o desempenho em tarefas de julgamento semântico e sintomas de depressão predizem os desempenhos em tarefas de fl uência verbal de critério livre, fonêmico-ortográfi co e semântico. Participaram desse estudo 260 adultos saudáveis entre 19 e 75 anos. Foi utilizada a correlação de Pearson e da análise de regressão múltipla. As variáveis analisadas foram associadas em diferentes modelos combinatórios e apresentaram distintos níveis de explicação de acordo com o tipo de fl uência verbal. A escolaridade foi a variáveis que melhor contribuiu para a explicação do desempenho nas tarefas de fl uência verbal, seguida pela idade, principalmente na tarefa fonêmico--ortográfi ca. O desempenho nas tarefas de julgamento semântico predisse a performance da fl uência verbal isoladamente ou em combinação com as demais variáveis. Esses resultados corroboram a importância da escolaridade na cognição, sustentando a hipótese da reserva cognitiva e confi rmam a implicação do processamento léxico-semântico na fl uência verbal. Palavras-chave: Fluência verbal, idade, escolaridade, leitura e escrita, depressão, julgamento semântico.

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“…However, the number of clusters, their quality and the frequency of switching between clusters or between clusters and words did not change (Voorspoels et al, 2014). Decreased speed of information processing was demonstrated to affect the number of generated words in the investigated group of patients (Hong et al, 2002;Riley et al, 2000;van Beilen et al, 2004;Vinogradov et al, 2003). Therefore, decreased speed of information processing in schizophrenia patients should be taken into account in individual testing of verbal fluency.…”

Section: Or Ruff Figural Fluencymentioning

confidence: 84%

“…According to the first assumption, incorrect performance on verbal fluency tasks stems from impaired semantic system (storage) and ineffective access mechanisms to stored information (van Beilen et al, 2004). The organisation of semantic information seems to be linked mostly to temporal lobes (Troyer et al, 1998).…”

Section: Or Ruff Figural Fluencymentioning

confidence: 99%

Neuropsychological Characteristics of Verbal and Non-Verbal Fluency in Schizophrenia Patients

Tyburski

Sokołowski

Chęć

et al. 2015

Archives of Psychiatric Nursing

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What is measured by verbal fluency tests in schizophrenia?

Cited by 64 publications

References 36 publications

Language, executive functioning and symptomatology—Is fluency a transversal tool in schizophrenia?

Language, executive functioning and symptomatology—Is fluency a transversal tool in schizophrenia?

Effect of aging, education, reading and writing, semantic processing and depression symptoms on verbal fluency

Neuropsychological Characteristics of Verbal and Non-Verbal Fluency in Schizophrenia Patients

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