Category - Specific semantic deficits
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document in English
psychology
presentation
published 03/07/2008
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level : Advanced
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Summary
The task of explaining the organization of conceptual knowledge is both promising and difficult. It is promising because if conceptual knowledge is organized, then in principle it should be possible to form theories which would account for the nature of conceptual organization in normal brains and brains which present for cognitive deficits of one kind or another. We should think that this organization would obtain modularly; that is, we should think that conceptual knowledge should be organized according to functionally individuated cognitive mechanisms. There is reason to be wary of this promise, however. The most relevant body of possible evidence for this task spells difficulty for cognitive theorists. Subjects who present for selective deficits of semantic processing of one kind or another are notoriously difficult to explain. Cases of category-specific semantic deficits, in which individuals behave as if unable to name and/or recognize items of a particular semantic category, presently resist satisfactory explanation and therefore prevent the success of any theory of semantic architecture.
Table of Contents
- Introduction.
- History and Development of Category-Specific Semantic Deficits.
- Sensory-Functional hypothesis.
- Domain-Specific hypothesis.
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