Development of Japanese Versions of the 4‐Item Mystical Experience Questionnaire and 7‐Item Challenging Experience Questionnaire
Neuropsychopharmacology Reports August 27, 2026 Futaba Umemura, Hiroko Kotajima‐Murakami, Justin C. Strickland et al.
INTRODUCTION: Interest in therapeutic applications of psychedelics has recently resurged. Mystical-type and challenging experiences that are elicited by psychedelics are commonly assessed using the 30-item Mystical Experience Questionnaire (MEQ-30) and the 26-item Challenging Experience Questionnaire (CEQ), respectively. The brief 4-item MEQ (MEQ-4) and 7-item CEQ (CEQ-7) may reduce respondent...