ArticlePsychological medicine2024
Validation of the imperial psychedelic predictor scale.
Article in Psychological medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 7 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
7 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- The Use of Psychedelics in the Treatment of Adult ADHD: A Systematic and Mechanistic Review.International journal of molecular sciences · 2026Pooled it
- Methodological fragmentation and integration priorities in psychedelic-assisted therapy assessment: a scoping review.Frontiers in psychiatry · 2026Pooled it
- A short-acting psychedelic intervention for major depressive disorder: a phase IIa randomized placebo-controlled trial.Nature medicine · 2026Trial
- An exploratory study of breathwork-induced altered states of consciousness in experienced practitioners: the airways to alteration (A2A) trial.Frontiers in psychology · 2026Article
- Validation of the Imperial Psychedelic Predictor Scale - CORRIGENDUM.Psychological medicine · 2025Article
- On Minimizing Risk and Harm in the Use of Psychedelics.Psychiatric research and clinical practice · 2025Article
- Psychological effects of psychedelics in adolescents.Frontiers in child and adolescent psychiatry · 2024Article
Corrections and comments
- Erratum issued
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAccess to psychedelic drugs is liberalizing, yet responses are highly unpredictable. It is therefore imperative that we improve our ability to predict the nature of the acute psychedelic experience to improve safety and optimize potential therapeutic outcomes. This study sought to validate the 'Imperial Psychedelic Predictor Scale' (IPPS), a short, widely applicable, prospective measure intended to be predictive of salient dimensions of the psychedelic experience.
methodsUsing four independent datasets in which the IPPS was completed prospectively - two online surveys of 'naturalistic' use (
resultsOur approach produced a 9-item scale with good internal consistency (Cronbach's
conclusionsTogether, these data suggest that the IPPS is predictive of relevant acute features of the psychedelic experience in a broad range of contexts. We hope that this brief 9-item scale will be widely adopted for improved knowledge of psychedelic preparedness in controlled settings and beyond.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.