The Hallucinogen Rating Scale: Updated Factor Structure in a Large, Multistudy Sample.
Biological Psychiatry Global Open Science March 1, 2025 Abigail E. Calder, Clifford Qualls, Gregor Hasler et al. 5 citations
The Hallucinogen Rating Scale (HRS) has been widely used to measure the subjective effects of psychedelics and other psychoactive substances. Its advantages include a basis in phenomenological interviews and clinical studies, straightforward items, and broad coverage of psychedelic effects. Previous studies have attempted to resolve its factor structure but were limited by small samples of...