It’s Not the Big Five: One Personality Trait Best Predicts Psychedelic Intensity
Who you are seems to shape how intense a psychedelic experience feels — and a new study points to one trait that does the predicting better than the famous “Big Five.”
Researchers Alexander Boardman, Jai Whelan, and Ryan Ward (University of Otago, Aotearoa New Zealand) surveyed 426 psychedelic users, in work published in Drug and Alcohol Review. Participants rated how strongly they’d experienced 20 sensory effects — from visual trails to out-of-body experiences — and completed two personality measures: the IPIP-NEO-60 (which scores the Big Five) and the Tellegen Absorption Scale, a 34-item measure of how readily someone slips into immersive, altered states of attention.
The standout predictor wasn’t any Big Five trait. It was absorption, which correlated with 18 of the 20 effects — by a wide margin the strongest personality dimension. The tightest links were with field-of-vision changes, visual acuity shifts, experiences of other dimensions or worlds, and synaesthesia. Among the Big Five, extraversion came closest, linked to gustatory hallucinations and “beautiful” visuals; neuroticism, openness, agreeableness, and conscientiousness barely registered.
There’s an important ceiling on this, though. In the regression models, absorption showed up in every top model — but dose and setting still carried more predictive weight. In other words, who you are appears to moderate trip intensity rather than drive it. It’s a dial, not the engine.
What this does not show
- The data is self-report and correlational, so it can’t establish that absorption causes more intense effects — only that the two move together.
- The sample is people who already use psychedelics, recruited in one country, which limits how far it generalizes.
- Nothing here is medical, therapeutic, or dosing guidance. As the framing goes: a piece of the puzzle, not the whole picture.
Still, it nudges the long-running “set and setting” conversation in a measurable direction — suggesting a specific, testable trait (“set”) that may help explain why the same dose lands so differently for different people.
Sources
- Boardman, A., Whelan, J., & Ward, R. D. “Personalised Perception: The Effect of Personality on the Sensory Effects of Psychedelics.” Drug and Alcohol Review (2026). doi:10.1111/dar.70172
- Predicting Reactions to Psychedelic Drugs: A Systematic Review of States and Traits — ACS Pharmacology & Translational Science
ShroomWire Research Desk · AI-assisted, human-reviewed · persona: Spore. We report what research may suggest and what it does not prove.
