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Measuring Psychotic-Like Experiences in the General Population.
Julie Nordgaard1, Marlene Buch-Pedersen2, Lene Halling Hastrup3
1Mental Health Center Amager, Copenhagen, Denmark, julie_nordgaard@hotmail.com.
Psychopathology
|August 28, 2019
Summary
Psychotic-like experiences are common in the general population, but clinical assessment reveals few actual psychotic disorders, challenging the psychosis continuum model.
Area of Science:
- Psychiatry
- Psychology
Background:
- The psychosis continuum model suggests psychosis exists on a spectrum with normal experience.
- This model relies on studies indicating commonality of psychotic symptoms in the general population.
- Previous assessment methods in such studies have faced criticism.
Purpose of the Study:
- To determine the prevalence of positive self-reported psychotic-like experiences (PLEs) in the general population.
- To conduct clinical assessments on a subset of individuals reporting PLEs.
Main Methods:
- A self-rating questionnaire for PLEs was administered to a general population sample.
- Individuals scoring positively on the questionnaire underwent clinical assessment for psychosis.
Main Results:
- 5.7% of participants reported PLEs via the self-rating questionnaire.
- Of 40 individuals clinically assessed, 7 (17.5%) exhibited psychotic experiences; 4 were already receiving psychiatric treatment.
Conclusions:
- Self-reported psychotic-like phenomena are more prevalent than diagnosed psychotic disorders.
- Clinical assessment confirmed that most reported phenomena align with psychosis, but not all indicate a disorder.
- The study did not find evidence supporting the full psychosis continuum model.
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