I found this advertisement at the MAPS Volunteering page. Although it looks to be a decent time commitment, I thought the topic may interest some of you
I recommend a careful read of the informed consent info and/or emailing the researcher for more information rather than posting questions here, as I won't be able to answer them. Please post if you decide to complete the survey though as I'm sure others are interested in your experience with it.
Both links now say "Thanks for trying to take part in this survey however we have finished collecting results and this survey is now closed."

Researchers at UTC are looking for participants to fill out an online survey assessing the psychological, physiological, mystical, and cognitive changes and enhancements of psychoactive cacti and psilocybin mushrooms. We are interested in experienced users of these psychoactive substances.
Requirements for participation:
* You must be 18 years old or older to participate
* You must also have used one or some combination of peyote, San Pedro, other trichocereus cacti, or other psychoactive cacti OR you must have used one or more types of psilocybin mushrooms
* You must have taken one of these psychoactive substances at least 4 or more times
* You must also agree that you have no medical history of mental disease.
To help maintain your anonymity and confidentiality, no identifying information like your name and address will be asked of you. This survey is also located on a survey website that has a SSL encryption. IP addresses are not tracked. For additional security, you may want to go to a public library, internet cafe, or any other anonymous terminal to fill out this survey.
The survey contains three questionnaires which may take an hour or two to fill out, so please set aside enough time to complete the survey before continuing to one of the two links.
You may contact Shannon Campbell for further information.
For psychoactive cacti users: http://cactus.speedsurvey.com
For psilocybin mushroom users: http://mushroom.speedsurvey.com
Both links now say "Thanks for trying to take part in this survey however we have finished collecting results and this survey is now closed."
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