The score distribution and factor structure of the Community Assessment of Psychic Experiences-Positive Scale (CAPE-P15) in a Canadian sample

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Abstract

Aim

Psychotic-like experiences (PLEs) share several risk factors with psychotic disorders and confer greater risk of developing a psychotic disorder. Thus, individuals with PLEs not only comprise a valuable population in which to study the aetiology and premorbid changes associated with psychosis, but also represent a high-risk population that could benefit from clinical monitoring or early intervention efforts.

Method

We examined the score distribution and factor structure of the current 15-item Community Assessment of Psychic Experiences-Positive Scale (CAPE-P15) in a Canadian sample. The CAPE-P15, which measures current PLEs in the general population, was completed by 1741 university students.

Results

The distribution of total scores was positively skewed, and confirmatory factor analysis indicated that a 3-factor structure produced the best fit.

Conclusion

The CAPE-P15 has a similar score distribution and consistently measures three types of positive PLEs: persecutory ideation, bizarre experiences and perceptual abnormalities when administered in Canada vs Australia.

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