The 3D-ASCr scale: A revalidation of the core dimensions of the Altered States of Consciousness Rating Scale 5D(11)-ASC for psychedelic research

Kurt Stocker, Matthias Hartmann, Yasmin Schmid, Severin B. Vogt, Anna M. Becker, Laura Ley, Isabelle Straumann, Denis Arikci, Aaron Klaiber, Livio Erne, Patrick Vizeli, Friederike Holze, Matthias E. Liechti

Journal of Psychopharmacology

Published online on December 26, 2025

Abstract

Journal of Psychopharmacology, Ahead of Print.
Background:The Altered States of Consciousness Scale (3/5D-ASC or 11-ASC) is widely used to assess non-ordinary states of consciousness, particularly for psychedelic research. However, its original dimensional model (3D-ASC within 5D-ASC) and later 11-...