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Capgras delusion: an interactionist model.

¹Division of Psychology, Nottingham Trent University, Burton Street, Nottingham NG1 4BU, UK. garry.young@ntu.ac.uk

Consciousness and Cognition

|March 4, 2008

Summary

This study proposes an interactionist model for Capgras delusion, emphasizing disturbed phenomenology. The delusional belief arises from and reinforces the patient's sense of estrangement, explaining its persistence.

Area of Science:

Neuroscience
Psychiatry
Cognitive Psychology

Background:

Capgras delusion is traditionally explained by two-stage models focusing on cognitive disruption.
These models often overlook the significant role of disturbed phenomenology, described as "anomalous" or "strange" experiences.

Purpose of the Study:

To propose an interactionist model for Capgras delusion formation and maintenance.
To highlight the contribution of disturbed phenomenology and a sense of estrangement.

Main Methods:

Critically analyze traditional two-stage models of Capgras delusion.
Advocate for an interactionist model incorporating bottom-up and top-down processing.
Examine the congruence between delusional beliefs and phenomenal content.

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Main Results:

The delusional belief is an attempt to explain the patient's sense of estrangement.
The delusion shapes perception, leading to the experience of impostors.
This interaction explains the delusion's maintenance and resistance to change.

Conclusions:

An interactionist model, emphasizing disturbed phenomenology, offers a more comprehensive account of Capgras delusion.
This model posits a two-way interaction between experience and belief, unlike unidirectional traditional models.
The proposed framework may be applicable to other delusional disorders.