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How delusion is formed?
1Department of Psychiatry, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Republic of Korea; Department of Psychiatry, Maeumsarang Hospital, Wanju, Jeollabuk-do, Republic of Korea.
Medical Hypotheses
|January 31, 2016
Summary
Delusions may form from rational cognitive processes interpreting unusual experiences. Repeated unusual experiences, even if only slightly unusual, can solidify these beliefs into delusions.
Area of Science:
- Cognitive Neuroscience
- Psychiatry
Background:
- Delusions are traditionally viewed as irrational.
- Alternative theories propose delusions as rational responses to abnormal experiences.
Purpose of the Study:
- To model delusion formation using Bayesian inference.
- To explore the cognitive mechanisms underlying delusion development.
Main Methods:
- A simulation based on Bayesian inference was employed.
- The model analyzed the impact of repeated experiences on belief formation.
Main Results:
- Repetitive, marginally plausible experiences can lead to firm delusional beliefs.
- The model explains delusion systematization and delayed development with inconsistent plausibility.
- The model suggests why delusions resist correction.
Conclusions:
- Delusions can be understood as a consequence of rational heuristics applied to abnormal experiences.
- The Bayesian inference model provides a framework for delusion formation.
- Individual subject characteristics influence the rationality of these cognitive processes.
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