Perception of self and other in psychosis: a method for analyzing the structure of the phenomenology.
Claire Dean, Brita Elvevåg, Gert Storms, Catherine Diaz-Asper
Psychiatry Research December 30, 2009 DOI: 10.1016/j.psychres.2008.12.017 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Case study Qualitative Case report Peer reviewed |
|---|---|
| Sample size | 1 |
| Population | One patient with psychosis who was fluent and able to give a lucid account of his phenomenological experiences |
| Topics | Philosophy of mind |
| Key findings | A clustering analysis of one patient's delusions about self and others produced a well-fitting, parsimonious structure in which certain persons had no unique feature sets. The authors argue this lack of unique features underlies the patient's confusion between real and delusional people, and propose the method can help uncover mechanisms of delusions in psychosis. |
Abstract
Although the phenomenology accompanying psychoses is fascinating, hitherto empirical examinations have been qualitative and thus limited in their clinical conclusions regarding the actual underlying cognitive mechanisms responsible for the formation and maintenance of the delusion, which is often distressing to the patient. We investigated the internal cognitive structure (i.e., connections) of some delusions pertaining to self and others in a patient with psychosis who was very fluent and thus able to provide a lucid account of his phenomenological experiences. To this end we employed a clustering method (HICLAS disjunctive model) in conjunction with standard neuropsychological tests. A well-fitting, but parsimonious solution revealed the absence of unique feature sets associated with certain persons, findings that provide a compelling case underlying the confusion in certain instances between real and delusional people. We illustrate the methodology in one patient and suggest that it is sensitive enough to explore the structure of delusions, which in conjunction with standard neuropsychological and clinical assessments promises to be useful in uncovering the mechanisms underlying delusions in psychosis.
Comparable studies
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| An extended case study on the phenomenology of sequence-space synesthesia Single adult with sequence-space synesthesia | 2014 | Phenomenological case study | n = 1 |
| "I can't tell whether it's my hand": a pilot study of the neurophenomenology of body representation during the rubber hand illusion in trauma-related disorders. Individuals with the dissociative subtype of posttraumatic stress disorder (PTSD) | 2016 | Case series | n = 3 |
| Neurophenomenology of an Altered State of Consciousness: An fMRI Case Study. A single research participant with self-proclaimed ecstatic Kundalini meditative... | 2016 | Case study | n = 1 |
| Multimodal neurophenomenology of advanced concentration absorption meditation: An intensively sampled case study of Jhana. One advanced meditator with over 23,000 hours of meditation practice | 2024 | Case study | n = 1 |