Abstract：
BACKGROUND:Disorganisation of semantic memory could provide a cognitive explanation for the disturbances of thinking and reasoning in schizophrenia. In this study, we directly test this explanation by identifying patients with disorganised semantic categories and then examine how they use their knowledge about these same categories in an inductive reasoning task. METHOD:Experiment 1 utilised a semantic category-sorting task to identify patients with disorganisation of semantic memory. In Experiment 2, the patients with disorganised categories carried out a category-based inductive reasoning task. Accurate performance on this task requires access to well-organised semantic knowledge about the objects and categories used in Experiment 1. RESULTS:Patients with disorganised semantic categories in Experiment 1 did not demonstrate any difficulties or unusual responses when reasoning about the same categories in Experiment 2. CONCLUSION:Disorganisation of semantic memory may not be the primary cause of disturbed reasoning or thought in schizophrenia. Patients with schizophrenia tend to generate ad hoc categories, which are unsuited to the current context. Impaired performance on semantic memory tasks can arise from a misunderstanding of social context.
journal_name
Schizophr Resjournal_title
Schizophrenia researchauthors
Green NE,Done DJ,Anthony SH,McKenna PJ,Ochocki Mdoi
10.1016/j.schres.2003.12.003subject
Has Abstractpub_date
2004-10-01 00:00:00pages
233-40issue
2-3eissn
0920-9964issn
1573-2509pii
S0920996404000039journal_volume
70pub_type
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