"In this survey, we want to characterize various experiences of encounters with something that someone might call: God (e.g., the God of your understanding), Higher Power, Ultimate Reality, or an Aspect or Emissary of God (e.g., an angel)."

Participants in the psychedelic version of the questionnaire were required to fulfill the following inclusion criteria: (1) Were at least 18 years old; (2) Read, write, and speak English fluently; (3) Had not completed the questionnaire previously; (4) Had a God encounter experiences (as described above) after taking a dose of a classic hallucinogen that had moderate to strong psychoactive effects. Participants in the non-drug version of the questionnaire were required to fulfill inclusion criteria 1, 2, and 3 as well as the additional criterion that they had had a God encounter experience (as described above) but that they had never had such an experience after having taken a psychoactive drug.