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The Two-Factor Framework for Explaining Delusions The Two-Factor Framework for Explaining Delusions
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Adoption and persistence: Two options for the two-factor framework Adoption and persistence: Two options for the two-factor framework
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Bayesian approaches Bayesian approaches
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Bayesian inference Bayesian inference
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Bayes in the Two-Factor Framework: Adoption of the Delusional Belief Bayes in the Two-Factor Framework: Adoption of the Delusional Belief
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From deficit to delusional belief: Capgras delusion From deficit to delusional belief: Capgras delusion
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Biased Bayesian inference Biased Bayesian inference
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Bayes in the Two-Factor Framework: Persistence of the Delusional Belief Bayes in the Two-Factor Framework: Persistence of the Delusional Belief
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Two accounts of persistence Two accounts of persistence
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Diagnostic evidence, similar evidence, and “unfalsifiability” Diagnostic evidence, similar evidence, and “unfalsifiability”
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Rejecting evidence Rejecting evidence
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Interim summary Interim summary
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Belief Evaluation and the Fragmented Mind Belief Evaluation and the Fragmented Mind
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Limits on belief evaluation imposed by consistency and coherence Limits on belief evaluation imposed by consistency and coherence
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Compartmentalization and Spinozan belief formation Compartmentalization and Spinozan belief formation
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Prepotent doxastic responses, compartmentalization, and belief evaluation Prepotent doxastic responses, compartmentalization, and belief evaluation
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How Did the Patient Come to Adopt the Belief? How Did the Patient Come to Adopt the Belief?
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Abnormal data and anomalous experience Abnormal data and anomalous experience
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Explanation or endorsement Explanation or endorsement
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Bayesian inference in a perceptual module Bayesian inference in a perceptual module
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From anomalous experience to delusional belief From anomalous experience to delusional belief
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Why Does the Belief, once Adopted, Persist Rather Than Being Rejected? Why Does the Belief, once Adopted, Persist Rather Than Being Rejected?
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Bayesian belief evaluation and cognitive resources Bayesian belief evaluation and cognitive resources
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Failure of compartmentalization Failure of compartmentalization
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Conclusion Conclusion
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Acknowledgments Acknowledgments
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References References
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42 Delusion: Cognitive Approaches—Bayesian Inference and Compartmentalization
Get accessMartin Davies, Corpus Christi College, University of Oxford
Andy Egan, Department of Philosophy, Rutgers University, New Brunswick, NJ, USA; Arché Philosophical Research Centre, University of St Andrews, St Andrews, Scotland
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Published:05 September 2013
Cite
Abstract
Cognitive approaches contribute to our understanding of delusions by providing an explanatory framework that extends beyond the personal level to the sub personal level of information-processing systems. According to one influential cognitive approach, two factors are required to account for the content of a delusion, its initial adoption as a belief, and its persistence. This chapter reviews Bayesian developments of the two-factor framework.
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