Reliability and Validity of the Japanese Version of Paranoia Checklist

Abstract

The purpose of this study was to develop Japanese version of Paranoia Checklist (JPC), in order to assess persecutory ideation in a non-clinical population. One hundred and twenty undergraduates completed JPC, the Paranoia Scale, and Peters et al. Delusions Inventory (PDI). Results revealed that JPC had one-factor structure and high internal consistency. JPC scores had positive correlations with scores of the Paranoia Scale and PDI. The results of the present study suggested that JPC had high reliability and validity as a measure of persecutory ideation.