https://www.csp.org/csp-funded-research/effects-of-psilocybin-on-religious-and-spiritual-attitudes-and-behaviors-in-clergy-from-various-major-world-religions. 2026-06-29 https://www.csp.org/csp-funded-research/survey-of-subjective-%22god-encounter-experiences%22%3A-comparisons-among-naturally-occurring-experiences-and-those-occasioned-by-the-classic-psychedelics-psilocybin%2C-lsd%2C-ayahuasca%2C-or-dmt. 2026-06-29 https://www.csp.org/csp-funded-research/psilocybin-can-occasion-mystical-type-experiences-having-substantial-and-sustained-personal-meaning-and-spiritual-significance. 2026-06-29 https://www.csp.org/csp-funded-research/mystical-type-experiences-occasioned-by-psilocybin-mediate-the-attribution-of-personal-meaning-and-spiritual-significance-14-months-later. 2026-06-29 https://www.csp.org/csp-funded-research/psilocybin-occasioned-mystical-type-experiences%3A-immediate-and-persisting-dose-related-effects 2026-06-29 https://www.csp.org/csp-funded-research/survey-study-of-challenging-experiences-after-ingesting-psilocybin-mushrooms%3A-acute-and-enduring-positive-and-negative-consequences. 2026-06-29 https://www.csp.org/csp-funded-research/psilocybin-occasioned-mystical-type-experience-in-combination-with-meditation-and-other-spiritual-practices-produces-enduring-positive-changes-in-psychological-functioning-and-in-trait-measures-of-prosocial-attitudes-and-behaviors. 2026-06-29