Semantic Cognition: A Parallel Distributed Processing Approach

Paperback | January 20, 2006

byTimothy T. Rogers, James L. Mcclelland

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This groundbreaking monograph offers a mechanistic theory of the representation and use of semantic knowledge, integrating the strengths and overcoming many of the weaknesses of hierarchical, categorization-based approaches, similarity-based approaches, and the approach often called "theory theory." Building on earlier models by Geoffrey Hinton in the 1980s and David Rumelhart in the early 1990s, the authors propose that performance in semantic tasks arises through the propagation of graded signals in a system of interconnected processing units. The representations used in performing these tasks are patterns of activation across units, governed by weighted connections among them. Semantic knowledge is acquired through the gradual adjustment of the strengths of these connections in the course of day-to-day experience.

The authors show how a simple computational model proposed by Rumelhart exhibits a progressive differentiation of conceptual knowledge, paralleling aspects of cognitive development seen in the work of Frank Keil and Jean Mandler. The authors extend the model to address aspects of conceptual knowledge acquisition in infancy, disintegration of conceptual knowledge in dementia, "basic-level" effects and their interaction with expertise, and many findings introduced to support the idea that semantic cognition is guided by naive, domain-specific theories.

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This groundbreaking monograph offers a mechanistic theory of the representation and use of semantic knowledge, integrating the strengths and overcoming many of the weaknesses of hierarchical, categorization-based approaches, similarity-based approaches, and the approach often called "theory theory." Building on earlier models by Geoffr...

Timothy T. Rogers is a research scientist at the Medical Research Council Cognition and Brain Sciences Unit in Cambridge, England.

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Format:PaperbackDimensions:448 pages, 9 × 7 × 0.75 inPublished:January 20, 2006Publisher:The MIT PressLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0262681579

ISBN - 13:9780262681575

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This book deals with one of the central questions in cognitive science: What is the nature of semantic knowledge? The computational framework that Rogers and McClelland propose, while elegant in its simplicity, provides deep insights into the development (and loss, with brain damage) of category structure, causal knowledge, and semantic organization. In providing both a mechanistic processing account as well as an interpretation of the principles underlying the mechanism's properties, Rogers and McClelland explain a wide range of complex phenomena that have hitherto resisted a unified account. This is a very important book.