We are looking for research volunteers in the Providence area who recently entered treatment or are seeking treatment for alcohol use and have used cannabis to participate in a paid confidential research study from Brown University. 

Project MARS is looking for volunteers ages 21-50. Eligible participants must be current alcohol drinkers and cannabis users to participate in a confidential research study on the effects of cannabis and alcohol at Brown University. Participants will complete in-person study sessions and daily surveys in a phone app.

We are recruiting teens ages 14-17 with a range of marijuana use—from none to a lot. To be eligible, teens must have a parent or guardian willing to participate (we do not share substance use information with parents), and must not have braces, permanent retainer, or implanted metal.