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JOURNAL ARTICLE
TWIN STUDY
VALIDATION STUDIES
Validation of the Chinese version of Community Assessment of Psychic Experiences (CAPE) in an adolescent general population.
Asian Journal of Psychiatry 2017 April
The Community Assessment of Psychic Experiences (CAPE) is a popular 42-item self-report assessment of psychosis proneness (PP) that has been widely-translated. However, there is as yet no validation of CAPE in non-Western languages. Here, we validated a Chinese translation of CAPE ("CAPE-C") in a young Chinese community sample. Factor analyses were employed in a sample of 660 individuals (mean age=18.63) to identify a culturally-sensitive factor structure for CAPE-C (Study 1). Since confirmatory factor analysis (CFA) suggested that CAPE-C did not follow the original factor structure, exploratory factor analysis and follow-up CFA were employed to establish an alternative structure, resulting in a 15-item "CAPE-C15" which retained a three-factor structure tapping positive, negative and depressive symptoms. To demonstrate the specificity of CAPE-C15 as a measure of PP, we conducted regression analyses to examine associations between CAPE-C15 dimensions and other measures of psychotic and depressive symptoms (Study 2). Results confirmed that CAPE-C15 dimensions showed specific associations with relevant symptom dimensions of other measures, but not with irrelevant ones. Finally, to aid interpretation of CAPE-C15 scores, Receiver Operating Characteristic analysis was conducted to establish a cut-off score that could indicate test-takers' need for clinical attention (Study 3). We found that a cut-off score of 8.18 on CAPE-C15 positive and negative symptom frequency and distress scores distinguished individuals whose PP was within normal ranges from those at psychometric high-risk (sensitivity: 78.6%; specificity: 77.7%). CAPE-C15 will likely prove relevant to researchers and healthcare providers who serve Chinese-speaking adolescents and young adults.
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