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Associative Learning and Conditioning TheoryHuman and Non-Human Applications$
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Todd R. Schachtman and Steve S. Reilly

Print publication date: 2011

Print ISBN-13: 9780199735969

Published to Oxford Scholarship Online: May 2011

DOI: 10.1093/acprof:oso/9780199735969.001.0001

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Aberrant Attentional Processes in Schizophrenia as Reflected in Latent Inhibition Data

Aberrant Attentional Processes in Schizophrenia as Reflected in Latent Inhibition Data

Chapter:
(p.152) Chapter 7 Aberrant Attentional Processes in Schizophrenia as Reflected in Latent Inhibition Data
Source:
Associative Learning and Conditioning Theory
Author(s):

Robert E. Lubow

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199735969.003.0048

Latent inhibition (LI) is demonstrated when a previously unattended stimulus is less effective in a new learning situation than a novel stimulus. Since LI is reduced by dopamine agonists and increased by dopamine antagonists, and schizophrenic patients often display attentional impairments, LI has come to play an important role in the investigation of information processing deficits in schizophrenia. The chapter reviews the rationale for this approach and summarizes the LI data from schizophrenia patients and healthy groups that are self-rated on traits related to schizophrenia (schizotypality). The review suggests that schizophrenia patients with positive symptoms exhibit attenuated LI, whereas those with negative symptoms show normal or potentiated LI. These effects are accounted for by differences in the ability to shift attention from controlled to automatic processing and the manner in which such shifts are affected by the masking task load.

Keywords:   latent inhibition, schizophrenia, schizotypy, positive and negative symptoms, attention, masking task, masking task load, controlled processing, automatic processing

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