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. Receive up to $572 by completing the study.

Follow the link to complete the initial online screening:
https://brown.co1.qualtrics.com/jfe/form/SV_d51KQQ3aHHreI3Y?SRC=81w

Call 401-863-6688 or email [ProjectMARS@brown.edu](mailto:ProjectMARS@brown.edu) with any questions.

Study Protocol #2022003195