Table 1.
Most applied instruments for assessment of the acute psychedelic experience in clinical research on psychedelics from January 1st, 1990 to May 22nd, 2023.
| Instrument | N = 93 (1990–2023) | % of sample (1990–2023) | N = 58 (2016–2023) | % of sample (2016–2023) |
|---|---|---|---|---|
| 5D-ASC | 54 | 58.1 | 40 | 68.9 |
| VAS/Likert | 27 | 29.0 | 20 | 34.4 |
| HRS | 23 | 24.7 | 9 | 15.5 |
| MEQ30 | 15 | 16.1 | 15 | 25.9 |
| SOCQ/MEQ43 | 14 | 15.0 | 9 | 15.5 |
| ARCI | 11 | 11.8 | 4 | 6.9 |
| APZ | 10 | 10.7 | 2 | 3.4 |
| EDI | 7 | 7.5 | 7 | 12.1 |
| M-scale | 6 | 6.4 | 3 | 5.2 |
| CEQ | 5 | 5.4 | 5 | 8.6 |
| CADSS | 2 | 2.1 | 2 | 3.4 |
| DEQ | 2 | 2.1 | 2 | 3.4 |
| NDE | 1 | 1.1 | 1 | 1.7 |
| EBI | 1 | 1.1 | 1 | 1.7 |
| PSI | 1 | 1.1 | 1 | 1.7 |
| PIQ | 1 | 1.1 | 1 | 1.7 |
| PIS | 1 | 1.1 | 1 | 1.7 |
Overview of the entire sample and the 8 most recent years from 2016 to 2023.
APZ/OAV: Abnormer Psychischer Zustand; ARCI: Addiction Research Center Inventory; CADSS: Clinician-Administered Dissociative States Scale; CEQ: Challenging Experiences Questionnaire; DEQ: Drug Effects Questionnaire; EBI: Emotional Breakthrough Inventory; EDI: Ego Dissolution Inventory; HRS: Hallucinogen Rating Scale; MEQ30: Mystical Experience Questionnaire 30 items; M-scale: Hood Mysticism Scale; NDE: Near-Death Experience Questionnaire; PIS: Psychological Insight Scale; PIQ: Psychological Insight Questionnaire; PSI: Psychotomimetic States Inventory; SOCQ: States of Consciousness Questionnaire; VAS: Visual analog scales developed for the studies; 5D-ASC: Five-Dimension Altered States of Conscious Questionnaire.