Sergio Pérez Rosal

2 papers in the library · 1 citation · publishing 2025-2026

Papers

Accept to change: Translation and validation of the Acceptance/Avoidance-Promoting Experiences Questionnaire (APEQ) in an international survey of Spanish-speaking psychedelic users

Journal of Contextual Behavioral Science July 1, 2025 Oscar Soto-Angona, Amanda Rodríguez‐Urrutia, Josep Antoni Ramos‐quiroga et al. 1 citation

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DOI: 10.1016/j.jcbs.2025.100923 Social psychology Applied psychology

Quantifying psilocybin exposure in a natural product–based retreat setting: An observational field method for dose measurement

Psychedelics July 18, 2026 Sergio Pérez Rosal, Sonya C. Faber

A rapid colorimetric assay (PSILO QTest) was deployed during a 7-day psilocybin retreat in Jamaica to measure batch-level psilocybin concentration in Psilocybe cubensis mushrooms. Psilocybin content differed approximately 2.6-fold between two session batches: one batch averaged 6.095 mg/g, the other 15.75 mg/g. Estimated psilocybin-equivalent doses ranged from 15.2 to 21.3 mg in Session 1 and 47.1 to 70.7 mg in Session 2, showing that gram-based dosing poorly reflects actual psychoactive substance exposure. No serious adverse events were observed among 11 participants. The assay can be used by non-chemist facilitators to improve dose documentation in naturalistic psilocybin research.

DOI: 10.1016/j.psyche.2026.100029 Psilocybin Observational study Natural archaeology Field mathematics +3