The Community Assessment of Psychic Experiences-Positive scale (CAPE-P15) accurately classifies and differentiates psychotic experience levels in adolescents from the general population.

Autor: Núñez D; Faculty of Psychology, Universidad de Talca, Talca, Chile.; ANID, Millennium Science Initiative Program, Millennium Nucleus to Improve the Mental Health of Adolescents and Youths, Imhay, Chile.; Faculty of Psychology, Associative Research Program, Center or Cognitive Sciences, Universidad de Talca, Talca, Chile., Godoy MI; Departamento de Evaluación, Medición y Registro Educacional, Universidad de Chile, Santiago, Chile., Gaete J; ANID, Millennium Science Initiative Program, Millennium Nucleus to Improve the Mental Health of Adolescents and Youths, Imhay, Chile.; Faculty of Education, Universidad de Los Andes, Santiago, Chile., Faúndez MJ; Faculty of Psychology, Universidad de Talca, Talca, Chile.; ANID, Millennium Science Initiative Program, Millennium Nucleus to Improve the Mental Health of Adolescents and Youths, Imhay, Chile., Campos S; Faculty of Psychology, Universidad de Talca, Talca, Chile.; ANID, Millennium Science Initiative Program, Millennium Nucleus to Improve the Mental Health of Adolescents and Youths, Imhay, Chile., Fresno A; Faculty of Psychology, Universidad de Talca, Talca, Chile.; Faculty of Psychology, Associative Research Program, Center or Cognitive Sciences, Universidad de Talca, Talca, Chile., Spencer R; Faculty of Psychology, Universidad de Talca, Talca, Chile.; Faculty of Psychology, Associative Research Program, Center or Cognitive Sciences, Universidad de Talca, Talca, Chile.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2021 Aug 26; Vol. 16 (8), pp. e0256686. Date of Electronic Publication: 2021 Aug 26 (Print Publication: 2021).
DOI: 10.1371/journal.pone.0256686
Abstrakt: 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.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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