Fully and quasi-dimensional constructions of schizotypy
Abstract
This chapter concerns the dimensionality inherent to describe and understand schizotypy and schizotypal personality disorder (SPD). It concerns attempts that are being made to discover experimental paradigms to characterize the cognitive functioning of schizotypal and schizotypally disordered individuals; or, develop markers of cognitive nature that might be helpful in high-risk and genetics research. Two traditional views of dimensionality can be discerned, and roughly align to the psychiatric and psychological models. The psychiatric view of continuity is characteristically quasi-dimensional. Focusing on variations within the illness domain, and taking the abnormal state as its reference point, it construes dimensionality as degrees of expression of a disease process. Typical questions include diagnostic and nosological issues such as the relationship between full-blown psychosis and forms of personality disorder as possible formes frustes of disease: SPD in the case of schizophrenia. The fully dimensional takes normality or health as the starting point.
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The psychosis distribution is both phenomenological and temporal, with psychotic-like experiences becoming more severe over time in people who later develop formal psychotic disorders.
“This distribution is both phenomenological, with individuals at different points along the continuum experiencing different severities of psychotic-like experiences, and temporal, with psychotic-like experiences becoming more severe over time in those who eventually develop formal psychotic disorders (Barrantes-Vidal et al., 2015; Claridge & Beech, 1995; M. T. Nelson et al., 2013; Jim van Os & Re”
From Narrative identity in the psychosis spectrum: A systematic review and developmental model (2021) · cites this paper as Claridge & Beech, 1995
Genetic, neuropsychological, social, and environmental findings support a fully dimensional model in which nonclinical psychotic-like experiences and diagnosable psychotic disorders lie at opposite ends of a continuous distribution.
“Convergent genetic, neuropsychological, social, and environmental findings support a “fully dimensional” model of psychosis or schizotypy, in which nonclinical psychotic-like experiences and diagnosable psychotic disorders form opposite ends of a continuous distribution (Claridge & Beech, 1995; DeRosse & Karlsgodt, 2015; M. T. Nelson et al., 2013).”
From Narrative identity in the psychosis spectrum: A systematic review and developmental model (2021) · cites this paper as Claridge & Beech, 1995
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Cited by 194
- Authors
- Claridge, G., & Beech, T.
- Venue
- Schizotypal Personality
- Publisher
- Cambridge University Press
- Published
- 1995-09-29
- Pages
- 192-216
- OpenAlex
- W2491416749
- Cited by
- 194
- References
- 0
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 6 · 2023: 9 · 2022: 8 · 2021: 12 · 2020: 14 · 2019: 6 · 2018: 13 · 2017: 8 · 2016: 7 · 2015: 9 · 2014: 11 · 2013: 7 · 2012: 13
- FWCI
- 1.92
- Type
- book chapter
- Language
- en
- Open access
- closed
- Locations
- Cambridge University Press eBooks (publishedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
- Social Sciences › Psychology › Clinical Psychology › Psychopathy, Forensic Psychiatry, Sexual Offending
- Keywords
- schizotypy, schizotypal personality disorder, dimensionality, psychosis, schizophrenia, disease classification, diagnostic criteria, cognitive function, genetic risk markers, high-risk research
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