The survey
The XandY Omnibus surveyed 1,527 US adults online from November 17 to 19, 2023. Results are weighted to represent the US adult population; weighting widens the margin of error to ±3.1 points for all adults (design effect 1.49). Estimates within a single audience have wider margins, because each audience is a fraction of the sample; the ± figures on the audience profiles are margins on the size of each audience. 1,525 respondents answered all nine segmentation questions and are described here; nobody was excluded for any other reason. The survey was fielded before the policy events described in section 02, so these audiences describe the public as that period began.
The model
A five-class latent class model estimated in R (poLCA) from seven indicators built from nine questions: feelings toward psychedelics, familiarity, three benefit-minus-harm comparisons, the number of eight substances tried, and the number of middle answers on the six belief items. Policy, trust and demographic questions were never used to build the audiences. The number of audiences was chosen by fitting two through seven and taking the point where the fit statistics stop improving materially and the smallest audience is still large enough to brief: adding a sixth buys almost nothing and produces a group of five percent. The solution reproduces its own groupings at an adjusted Rand index of 0.80 across forty split-half refits. A companion technical report sets out every robustness check.
How sure are we
Every respondent is kept. Nobody is excluded for straightlining, for inconsistent answers or for any other response pattern: a segmentation that drops awkward respondents becomes a segmentation of cooperative survey-takers. 14% of adults gave at least one answer that does not add up, such as reporting having tried a substance they said they had never heard of, or giving the identical answer to all nine belief items.
Those answers are not spread evenly, and two audiences carry most of them: 44% of Conflicted Insiders and 43% of the Disengaged, against 9% of Advocates, 6% of Curious Moderates and 1% of Opponents. Weighted, 72% of the 97 respondents who gave one answer to all nine belief items sit in the Disengaged. Refitting the model without them recovers a recognisably similar grouping (adjusted Rand index 0.69) but not an identical one.
What follows from that: the Disengaged is a real audience, and its absolute figures are the least reliable in this report. Among its members who answered consistently, support for research is 69% rather than 50% and the number of policy questions left unsure is 3.1 rather than 4.4. Read that audience as low-information and low-engagement, which both versions agree on, rather than as the precise percentages. The same caution applies to the line between Curious Moderates and the Disengaged: a refit without the flat answers keeps 38% of Curious Moderates in place and draws that boundary in a different spot, so anyone planning against those two should be ready to treat them as one. Conflicted Insiders carry a similar caveat: among those who answered consistently, 85% are very or extremely familiar, 74% have tried one, and their benefits-minus-harms average is -0.38. Self-reported use in online surveys runs higher than in federal surveys; we use it to compare audiences, not to estimate national usage.
Sources for section 02
- FDA complete response letter to Lykos Therapeutics, August 9, 2024: AJMC
- Massachusetts Question 4, November 2024, failed 56% to 43%: Axios Boston
- New Mexico Medical Psilocybin Act, signed April 7, 2025: Foley & Lardner
- FDA rolling review and national priority voucher for COMP360 psilocybin, April 24, 2026: Compass Pathways
Reproducibility
Every number in this report is produced by R scripts that run from the raw survey file: PSY5F_pipeline.R estimates and freezes the model, and PSY5F_public_numbers.R computes the figures shown here. The quiz uses the frozen model and reproduces its assignment for all 1,525 respondents.