Thanks for your interest in our research.  Here's some more information about this study so you can decide whether you'd like to be involved. 
 
The study is designed to investigate what the effect of smoking marijuana has on performing a visual attention task in individuals 18-35 years of age.  We are interested in examining this effect in people with different levels of exposure to marijuana use (from a lot of exposure to very little or none).  However, the study does not involve smoking marijuana in the lab.  The study requires participants to come in for 2 lab visits.  The first visit will last about 1½  hours and will include a brief interview regarding your drug use and medical history, collection of a urine sample to measure drug use, completion of paper-pencil questionnaires and a baseline recording of your performance during the task.  If you are a marijuana smoker, you may be randomly assigned to a study group that will require you to abstain from using marijuana for three days prior to Visit 2.
 
The second visit lasts approximately 2 ½ hours and participants will perform a series of visual attention tasks and complete a few more questionnaires.  While participants perform the task, we will be recording eye movement and facial muscle activity using sensors attached to the face.  Additionally, if you were asked to refrain from using marijuana for three days prior to this visit, we will need to confirm this with another urine sample. 
 
Participants will be paid by check $30 per hour at the end of the 2nd visit.  Additionally, for participants that were asked not to use marijuana for three days prior to Visit 2, a $200 bonus for abstinence will be mailed after results of the urine analysis are processed (approximately two weeks).
 
Finally, it is important to note that all of the information you provide to us will remain STRICTLY CONFIDENTIAL.  Your name will only be recorded on our study consent form and all other information is coded by number and kept in a separate secure area.  Additionally, our lab has received a Certificate of Confidentiality from the Department of Health and Human Services for this study.  This certificate stipulates that our lab can not reveal personal information regarding participant drug use behavior to any other organization, law enforcement entity or government institution.  A copy of this certificate is available by clicking on the link above and you will have the opportunity to ask any questions you have about this issue prior to participation in the study.
 
If you are still interested in being involved in the study, the next step is for you to respond by emailing us: 1) your first name, 2) phone number where you can be reached and 3) best time to reach you.  Due to the overwhelming response we have received for this study, it may take up to two weeks for us to contact you by phone.  At that point we can answer any questions you have about the study and we will need to ask you a few questions to see if you qualify to participate.  We will also schedule your study visits based on the time that best suits your schedule and our lab availability beginning in mid-January through the summer of 2009. 
 
Thank you again for your interest in our study.
 
Best wishes,
 
Rebecca Gloria, M.S.
Study Coordinator
UW Addiction Research Lab
Phone: 608-265-0058
Email: ARL@psych.wisc.edu