WHO ARE WE? We are researchers at the Department of Psychology at the University of Innsbruck, Austria interested in the effects of psychedelic substances when used outside of the laboratory. By participating, you would greatly help us advance the science of psychedelics! The principle investigator's profile: https://scholar.google.com/citations?user=K4A5zh8AAAAJ&hl=de&oi=ao WHO CAN PARTICIPATE? Anybody who... • plans on taking a classic psychedelic in the next weeks (i.e., LSD, psilocybin/magic mushrooms/truffles, DMT/Ayahuasca/5 - MeO - DMT, or mescaline) • has not taken a psychedelic in the past two weeks • is at least 18 years old • has a good command of English Note: This survey does not intend to encourage psychedelic drug use. Its aim is to sample people whose intent to take a psychedelic is already established. WHAT DO WE ASK OF YOU? This study involves the completion of 5 questionnaires, each at different times, starting one day before your planned experience and ending 3 months after. Even the completion of the first 2 questionnaires would help us a lot! If you complete all five questionnaires, you’ll have the chance to win one of twenty 10 - Dollar amazon gift certificates in your preferred currency. DATA PROTECTION AND ANONYMITY No identifying information will be collected. The data you submit will be treated confidentially and used only for the purpose of scientific publications. TO PARTICIPATE Register via this link or scan the QR code one day before your planned experience : https ://ethicadata.com/study/3359 / For questions contact : a ntonio.drescher @student.uibk.ac. at christina.sagioglou @uibk.ac.at STUDY ON PSYCHEDELIC EXPERIENCES