Delusions, positive illusions, and jumps to conclusions
Duration: 22 mins 20 secs
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About this item
| Description: | Talk by Dr Ryan McKay as part of short course 32 (The Believing Brain) |
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| Created: | 2016-01-07 14:53 |
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| Collection: | Faraday Institute Lectures |
| Publisher: | Faraday Institute |
| Copyright: | Faraday Institute |
| Language: | eng (English) |
| Keywords: | delusions; illusions; believing; brain; mind; neuroscience; faraday; mckay; science; religion; faith; belief; |
| Abstract: | Rational belief formation involves holding beliefs with the firmness that the evidence warrants. Unfortunately, humans are known to fall short of this ideal, being prone to various forms of “misbelief”. Such deviations from rational belief range from “healthy” (yet potentially destructive) forms, such as “positive illusions” about one’s prowess and prospects, to the bizarre delusions common in certain psychiatric and neurological disorders. According to the dominant psychiatric conception (e.g., the DSM), delusions are fixed beliefs that are under-responsive to relevant evidence. I will argue that whereas some cases of misbelief fit this definition, delusions may not. I will present evidence that delusion-prone individuals are actually overly responsive to current evidence.
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