Inclusion Criteria:  >18 years old Fluent in English Self-reported participation in therapy or a retreat in a naturalistic setting that incorporated the use of entheogens in the past five (5) years  Exclusion Criteria:  Inability to provide informed consent Inability to complete the online questionnaire No self-reported participation in therapy or a retreat in a naturalistic setting that incorporated the use of entheogens in the past five (5) years Self-reported participation in therapy or a retreat in naturalistic setting that incorporated the use of entheogens greater than five (5) years ago