... While controversial in the present societal climate, the use of psychedelic and entheogenic (i.e., God revealing) substances to enable the emergence of states of consciousness perceived as spiritual is a practice which has been shown to be pervasive throughout human societies and history (e.g., Bourguignon, 1973;Grinspoon & Bakalar, 1997;Grob, 2002;Harner, 1973;Hunt Badiner, 2002;McKenna, 1992;Roberts, 2001;Smith, 1964Smith, , 2000. Within the transpersonal movement, LSD (Grof, 1975(Grof, , 1980 and psilocybin (Pahnke, 1963, Doblin, 1991Roberts, 1997), among other substances (e.g., see Krippner & Sulla, 2000), have been deliberately used to facilitate rapid and dramatic shifts in states of consciousness which, in turn, are used to deepen and complexify client selfawareness. Though not the most common form of transpersonal intervention in use today, as the reader can see from the citations provided, the topic generates widespread interest. ...