The Community Assessment of Psychic Experiences-Positive scale (CAPE-P15) accurately classifies and differentiates psychotic experience levels in adolescents from the general population
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Background: There is increasing interest in studying psychotic symptoms in non-clinical populations, with the Community Assessment of Psychic Experiences-Positive scale (CAPE-P15) being one of the self-screening questionnaires used most commonly for this purpose. Further research is needed to evaluate the ability of the scale to accurately identify and classify positive psychotic experiences (PE) in the general population. Aim: To provide psychometric evidence about the accuracy of the CAPE-P15 for detecting PE in a sample of Chilean adolescents from the general population and classifying them according to their PE severity levels. Method: We administered the CAPE-P15 to a general sample of 1594 students aged 12 to 19. Based on Item Response Theory (IRT), we tested the accuracy of the instrument using two main parameters: difficulty and discrimination power of the 15 items. Results: We found that the scale provides very accurate information about PE, particularly for high PE levels. The items with the highest capability to determine the presence of the latent trait were those assessing perceptual anomalies (auditory and visual hallucinations), bizarre experiences (a double has taken the place of others; being controlled by external forces), and persecutory ideation (conspiracy against me). Conclusions: The CAPE-P15 is an accurate and suitable tool to screen PE and to accurately classify and differentiate PE levels in adolescents from the general population. Further research is needed to better understand how maladaptive psychological mechanisms influence relationships between PE and suicidal ideation (SI) in the general population.
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The CAPE-P15 has been shown to accurately classify and differentiate psychotic-like experiences in an adolescent general population sample.
“The CAPE-P15 has been shown to accurately classify and differentiate psychotic-like experiences in an adolescent general population sample [143]”
From Efficacy of a transdiagnostic Internet prevention approach in adolescents (EMPATIA study): study protocol of a randomized controlled trial (2024) · cites this paper as [143]
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Psychotic-like experiences in the emotional dysregulation-impulsivity link
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- Authors
- Núñez, D., Godoy, M. I., Gaete, J., Faúndez, M. J., Campos, S., Fresno, A., & Spencer, R.
- Affiliations
- Universidad de Talca (CL)
- University of Chile (CL)
- Universidad de Los Andes, Chile (CL)
- Corresponding author
- Núñez, D.
- Venue
- PLOS ONE
- Publisher
- Public Library of Science (PLoS)
- Published
- 2021-08-26
- Volume
- 16
- Issue
- 8
- Pages
- e0256686
- ISSN
- 1932-6203 (ISSN-L)
- PMC
- PMC8389461
- OpenAlex
- W3195494944
- Cited by
- 20
- References
- 78
- Citations by year
- 2026: 5 · 2025: 4 · 2024: 6 · 2023: 3 · 2022: 2
- FWCI
- 1.97
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- PLoS ONE (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- fondo de innovación y competitividad, gore maule, chile (FIC_40.001.103-0)
- anid – millennium science initiative program (NCS17_035)
- programa de investigación asociativa (pia) en ciencias cognitivas, facultad de psicología, universidad de talca (RU-158-2019)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Life Sciences › Neuroscience › Cognitive Neuroscience › Hallucinations in medical conditions
- Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
- Keywords
- adolescents, non-clinical population, scale validation, item response theory, item difficulty and discrimination, hallucinations, persecutory ideation
- MeSH terms
- Adolescent, Anxiety, Child, Depression, Female, Humans, Male, Psychiatric Status Rating Scales, Psychotic Disorders, Surveys and Questionnaires, Young Adult, Suicidal Ideation
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