The Questionnaire for Psychotic Experiences: Preliminary validation of the Italian version (QPE-I) in a general population sample
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This study presents the preliminary validation of the Italian version of the Questionnaire for Psychotic Experiences (QPE-I), assessing its psychometric properties in a general population sample. The QPE is a comprehensive, transdiagnostic tool designed to assess psychotic phenomena in the areas of auditory, visual, olfactory, tactile hallucinations, and delusions from a qualitative-quantitative perspective in both general and clinical populations. In this study, a total of 87 adult participants completed the QPE-I along with other self-report measures to determine reliability, internal consistency, and validity. The results indicate that the QPE-I largely retains the core structure of the original instrument while being adapted to the Italian context, showing good cross-cultural adaptation, internal consistency, reliability, and convergent and divergent validity. The QPE-I facilitates the transdiagnostic exploration of psychotic experiences, distinguishing qualitative differences in hallucinations and delusions between individuals. It also has potential clinical applications in psychotherapy, providing a means of monitoring symptomatic change and therapeutic outcomes. Further studies with larger and clinical samples are needed.
