This study aims to explore psychedelic use among the general population in North America, by 1) segmenting responses into user profiles: non-active psychedelic user, active psychedelic user, non-psychedelic user with interest, non-psychedelic user without interest, and non-psychedelic user with unknown interest; and 2) examining their positive and negative relationship with personality, cognitive, and social constructs. The results will ultimately inform decisions about which questions and measures to retain in the main study; and will additionally be used to identify participants for re-recruitment.