Participants were required to bring their own psilocybin mushrooms. Probably because it can be expensive and difficult for researchers to get obtain and administer pharma-grade psilocybin.

The dose was 0.5g of dried Cubensis mushrooms. Usually a microdose is 0.1-0.2g.

All the participants were healthy volunteers. There may be more noticable effects in people with depression or anxiety disorders, etc. Consider that antidepressants often have no effect in healthy volunteers.