Objective: We investigated: i) the reliability and validity of a Brazilian version of the Community Assessment of Psychic Experiences (CAPE), developed to detect and characterize psychotic experiences in the general population; and ii) the association between psychotic experiences, childhood adversity, and cannabis use in a population-based sample. Methods: We performed factorial analyses and generalized linear models with CAPE scores as the dependent variable in a sample composed of 217 first-episode psychosis patients, 104 unaffected biological siblings, and 319 non-psychotic population-based participants. Results: After removing seven items from its positive dimension and two items from its negative dimension, a 33-item Brazilian version of the CAPE showed the best adjustment indices (confirmatory fit index = 0.895; goodness of fit indices = 0.822; parsimony goodness of fit indices= 0.761; root mean square error of approximation [RMSEA] = 0.055 p [RMSEA ≤ 0.05] = 0.04) and internal consistency in all its dimensions (> 0.70). Childhood adversity was associated with higher scores in all three dimensions, as well as with total score. Lifetime cannabis use was associated with higher scores only in the positive dimension. Conclusion: The proposed Brazilian version of the CAPE corroborates the tridimensional approach for assessing psychosis-proneness, and the frequency and severity of psychotic manifestations are distributed as a spectrum in the general population.

This research received financial support from the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP; 2012/05178-0). CMD-B and PRM received productivity grants from the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq; 307492/

Psychotic experience,Psychometric property,General population,Cannabis,Childhood adversity

• Medicina Clínica - Ciências Médicas