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- Title
Validity and reliability of the CAPE: a self-report instrument for the measurement of psychotic experiences in the general population.
- Authors
Konings, M.; Bak, M.; Hanssen, M.; Van Os, J.; Krabbendam, L.
- Abstract
Objective: General population longitudinal cohort studies have demonstrated the prognostic validity of self-reported psychotic experiences, but data on reliability and cross-validation with interview-based measures of these experiences are sparse. This study tested the reliability and validity of the Community Assessment of Psychic Experiences (CAPE42). Method: At baseline, the CAPE42 was used to measure the subclinical psychosis phenotype in a general population sample ( n = 765). At follow-up (mean interval: 7.7 months), the Structured Interview for Schizotypy, Revised (SIS-R), the Brief Psychiatric Rating Scale (BPRS), and the CAPE42 were administered ( n = 510). Results: Baseline self-reported dimensions of psychosis were specifically and independently associated with their equivalent interview-based dimension at follow-up (standardized effect sizes of 0.4–0.5) and with their equivalent self-reported measure (standardized effect sizes of 0.6–0.8). Conclusion: The results indicate that self-reported dimensions of psychotic experiences in general population samples appear to be stable, reliable and valid.
- Subjects
PSYCHOSES; COHORT analysis; PHENOTYPES; PSYCHIATRIC rating scales; MENTAL illness
- Publication
Acta Psychiatrica Scandinavica, 2006, Vol 114, Issue 1, p55
- ISSN
0001-690X
- Publication type
Article
- DOI
10.1111/j.1600-0447.2005.00741.x