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Home List of Titles Is semantic fluency differentially impaired in schizophrenic patients with delusions?
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/94260
- Is semantic fluency differentially impaired in schizophrenic patients with delusions?
- Rossell, Susan L.; Rabe-Hesketh, Sophia; Shapleske, Jane; David, Anthony S.
- The study of cognitive deficits in schizophrenia has recently focused upon semantics: the study of meaning. Delusions are a plausible manifestation of abnormal semantics because by definition they involve changes in personal meaning and belief. A symptom-based approach was used to investigate semantic and phonological fluency in a group of schizophrenic patients subdivided into those with delusions and those with no current delusions. The results demonstrated that deluded patients only were differentially impaired on a test of semantic fluency in comparison to phonological fluency. All subjects showed the same decline in performance over the time course of both tests indicating that retrieval speed in schizophrenia is no different from that of normal controls. Further analysis of word associations in two semantic categories (animals and body parts), revealed that deluded subjects have a more idiosyncratic organisation for animals. The findings of reduced semantic fluency production and poor logical word associations may represent a disorganised storage of semantic information in deluded patients, which in turn affects efficient access.
- Publication type
- Journal article
- Journal of Clinical and Experimental Neuropsychology, Vol. 21, no. 5 (Oct 1999), pp. 629-642
- Publication year
- FOR Code(s)
- 1109 Neurosciences; 1701 Psychology; 1702 Cognitive Sciences
- Analysis of variance; Case-control studies; Cluster analysis; Cross-sectional studies; Delusions; Logic; Memory; Reaction time; Schizophrenic psychology; Speech; Word association tests
- Psychology Press
- Publisher URL
- Copyright © Swets & Zeitlinger (1999).
- Peer reviewed