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Occurrence, nature, impact and possible causal mechanisms of hallucinations across sensory modalities in people with an ultra‐high risk of psychosis.

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Title: Occurrence, nature, impact and possible causal mechanisms of hallucinations across sensory modalities in people with an ultra‐high risk of psychosis.
Authors: Dudley, Robert (AUTHOR), Patterson, Lucy (AUTHOR), Fernyhough, Charles (AUTHOR), Hamilton, Jahnese (AUTHOR), Gibbs, Christopher (AUTHOR), Barclay, Nicola A. (AUTHOR), Simpson, Jennifer (AUTHOR), Dodgson, Guy (AUTHOR)
Source: British Journal of Clinical Psychology. Jun2026, Vol. 65 Issue 2, p551-567. 17p.
Subjects: Senses, Risk assessment, Cross-sectional method, Post-traumatic stress disorder, Somatosensory disorders, Statistical correlation, Pearson correlation (Statistics), Research funding, Psychological distress, Delusions, Vision disorders, Data analysis, Secondary analysis, At-risk people, Parameters (Statistics), Questionnaires, Psychological well-being, Descriptive statistics, Hallucinations, Mathematical statistics, Sleep, Statistics, Research, Psychoses, Auditory perception, Data analysis software, Regression analysis
Geographic Terms: United Kingdom
Abstract: Objectives: Studies of unusual sensory experiences, like hallucinations, in people at risk of psychosis usually focus on auditory experiences. This study explored how common experiences across a range of sensory modalities were in people at an ultra‐high risk of developing psychosis. Particular attention was paid to the number of modalities reported and their impact. It was hypothesised that people reporting a greater number of modalities of hallucinations would report greater levels of general distress, more delusional ideation, lower emotional well‐being and poorer functioning. In addition, the contribution of sleep problems and post traumatic stress disorder (PTSD) symptoms in the reporting of hallucinations in different modalities was explored. Design: A single‐group cross‐sectional design was used. Methods: People at an ultra‐high risk of developing psychosis completed measures of hallucinations, delusions, general distress, functioning, emotional well‐being, trauma and sleep. Results: Nearly all participants reported hallucinations in the auditory domain. They also reported a range of other unusual sensory experiences, with visual and somatic/tactile hallucinations being reported by over half. Single sensory experiences or unimodal hallucinations were less common than hallucinations in two or more modalities, which were reported by 88% of the participants. The number of modalities of hallucinations was significantly associated with greater general distress, delusional ideation, reduced emotional well‐being and to some extent functioning. PTSD and sleep were identified as potential causal factors for hallucinations across modalities. Conclusions: Psychological therapies need to account for these experiences and could feasibly target them with treatments that focus on sleep or trauma. [ABSTRACT FROM AUTHOR]
Copyright of British Journal of Clinical Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Occurrence, nature, impact and possible causal mechanisms of hallucinations across sensory modalities in people with an ultra‐high risk of psychosis.
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  Data: <searchLink fieldCode="JN" term="%22British+Journal+of+Clinical+Psychology%22">British Journal of Clinical Psychology</searchLink>. Jun2026, Vol. 65 Issue 2, p551-567. 17p.
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  Data: Objectives: Studies of unusual sensory experiences, like hallucinations, in people at risk of psychosis usually focus on auditory experiences. This study explored how common experiences across a range of sensory modalities were in people at an ultra‐high risk of developing psychosis. Particular attention was paid to the number of modalities reported and their impact. It was hypothesised that people reporting a greater number of modalities of hallucinations would report greater levels of general distress, more delusional ideation, lower emotional well‐being and poorer functioning. In addition, the contribution of sleep problems and post traumatic stress disorder (PTSD) symptoms in the reporting of hallucinations in different modalities was explored. Design: A single‐group cross‐sectional design was used. Methods: People at an ultra‐high risk of developing psychosis completed measures of hallucinations, delusions, general distress, functioning, emotional well‐being, trauma and sleep. Results: Nearly all participants reported hallucinations in the auditory domain. They also reported a range of other unusual sensory experiences, with visual and somatic/tactile hallucinations being reported by over half. Single sensory experiences or unimodal hallucinations were less common than hallucinations in two or more modalities, which were reported by 88% of the participants. The number of modalities of hallucinations was significantly associated with greater general distress, delusional ideation, reduced emotional well‐being and to some extent functioning. PTSD and sleep were identified as potential causal factors for hallucinations across modalities. Conclusions: Psychological therapies need to account for these experiences and could feasibly target them with treatments that focus on sleep or trauma. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of British Journal of Clinical Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/bjc.70025
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        Text: English
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        PageCount: 17
        StartPage: 551
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      – SubjectFull: Senses
        Type: general
      – SubjectFull: Risk assessment
        Type: general
      – SubjectFull: Cross-sectional method
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      – SubjectFull: Post-traumatic stress disorder
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      – SubjectFull: Statistical correlation
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      – SubjectFull: Pearson correlation (Statistics)
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      – SubjectFull: Research funding
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      – SubjectFull: Psychological distress
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      – SubjectFull: Delusions
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      – SubjectFull: Vision disorders
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      – SubjectFull: Data analysis
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      – SubjectFull: Secondary analysis
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      – SubjectFull: At-risk people
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      – SubjectFull: Parameters (Statistics)
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      – SubjectFull: Psychological well-being
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      – TitleFull: Occurrence, nature, impact and possible causal mechanisms of hallucinations across sensory modalities in people with an ultra‐high risk of psychosis.
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              Text: Jun2026
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