Word production in schizophrenia and its relationship to positive symptoms

Kerns, John G.; Berenbaum, Howard; Deanna, M; Banich, Marie T.; Stolar, Neal

doi:10.1016/s0165-1781(99)00052-9

Cited by 47 publications

(37 citation statements)

References 34 publications

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“…The aforementioned study by Kerns, et al 5 showed that FTD is related to the production of non related words (few contextual words), coinciding with the recent results of Docherty, et al 3 . However, Kerns interprets this data as a disturbance in the organization of semantic memory.…”

Section: Introductionsupporting

confidence: 74%

“…These results suggest that patients with FTD have semantic processing deficits 5 . Alterations in semantic memory organization and loss of semantic information appear to reflect anatomical changes in the left temporal lobe or problems in the modulation of this brain area by the frontal lobe.…”

Section: Introductionmentioning

confidence: 80%

“…These results have provided evidence for some of the proposed hypotheses and are in accordance with previous investigations. Such is the case of the associations found between performance in the four VF tests, semantic and phonemic, and the severity of negative symptoms 5,13,14 .…”

Section: Discussionmentioning

confidence: 99%

“…There are many associations between psychotic symptoms and the performance in verbal fluency (VF) tests [1][2][3][4][5][6][7] . However, most of these associations are with negative symptoms rather than positive ones.…”

Section: Introductionmentioning

confidence: 99%

“…However, most of these associations are with negative symptoms rather than positive ones. Only one study, carried out by Kerns, Berenbaum, Barch, Banich & Stolar 5 , found a relationship between the presence and severity of hallucinations and the production of contextually related words.…”

Section: Introductionmentioning

confidence: 99%

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Verbal fluency in chronic schizophrenia and severity of psychotic symptoms: consideration of their relationship with errors in the tasks

Galaverna¹,

Morra²,

Bueno³

2014

Eur. J. Psychiat.

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-Background and Objectives: There are many associations between psychotic symptoms and performance in Verbal Fluency (VF) tasks. However, most of these are found are with negative symptoms. In this study we examined the relationship between the performance in four VF tasks and the severity of both positive and negative symptoms.Methods: To compare performance in different VF tasks, two groups of participants were matched for age, sex and educational level, a Healthy Control Group (N = 83) and a Chronic Schizophrenia Group (N = 83). We examined the correlation between cognitive performance in these verbal tests and the severity of psychotic symptoms in the group of patients.Results: The results show that the performance of patients with chronic schizophrenia in VF tests is significantly lower than for healthy individuals. The analysis of correlations between tasks showed a significant correlation between the severity of negative symptoms and poor performance in VF tasks. Another interesting result was the association between the severity of formal thought disorder and poor performance in semantic VF. A particularly striking result was the correlation between the severity of positive symptoms and the number of errors in VF tasks in the patient group.Conclusions: These results have provided evidence for some of the proposed hypotheses and are in accordance with previous investigations. The correlations between the positive symptoms and the number of errors in the different VF tasks have not been previously reported. It is important to note that most of these correlations are between the severity of positive symptoms and intrusion errors.

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Section: Introductionsupporting

confidence: 74%

Section: Introductionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Verbal fluency in chronic schizophrenia and severity of psychotic symptoms: consideration of their relationship with errors in the tasks

Galaverna¹,

Morra²,

Bueno³

2014

Eur. J. Psychiat.

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Cognitive Therapies for Refractory Schizophrenia

Watson

Cella

Wykes

2014

Treatment–Refractory Schizophrenia

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Verbal Fluency, Semantics, Context and Symptom Complexes in Schizophrenia

Vogel

Chenery

Dart

et al. 2009

J Psycholinguist Res

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Lexical-semantic access and retrieval was examined in 15 adults diagnosed with schizophrenia and matched controls. This study extends the literature through the inclusion of multiple examinations of lexical-semantic production within the same patient group and through correlating performance on these tasks with various positive and negative clinical symptoms. On tasks of verbal fluency, meaning generation, sentence production using contextual information and confrontation naming, participants with schizophrenia made significantly more semantic errors on naming tasks; produced fewer meanings for homophones; produced fewer items on semantic, phonological, cued and switching fluency tasks; and produced more errors on sentence production tasks when compared to healthy controls. Significant correlations were also observed between ratings of psychomotor poverty and measures of semantic production and mental inflexibility. This study has provided additional evidence for deficits in lexical-semantic retrieval which are not due to underlying semantic store degradation, do not involve phonological based retrieval, and at the level of sentence generation appear to vary as a function of the contextual constraints provided.

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Word production in schizophrenia and its relationship to positive symptoms

Cited by 47 publications

References 34 publications

Verbal fluency in chronic schizophrenia and severity of psychotic symptoms: consideration of their relationship with errors in the tasks

Verbal fluency in chronic schizophrenia and severity of psychotic symptoms: consideration of their relationship with errors in the tasks

Cognitive Therapies for Refractory Schizophrenia

Verbal Fluency, Semantics, Context and Symptom Complexes in Schizophrenia

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