We are looking for research volunteers in the Providence area who recently entered treatment or are currently seeking treatment for alcohol use and currently use cannabis or have in the past to participate in a paid confidential research study from Brown University. Participation involves completing interviews, filling out questionnaires, and the use of an alcohol sensor bracelet and smart phones to report on alcohol and other substance use in daily life. Procedures will occur in person and remotely (via videoconference). Complete our online screener here: https://go.brown.edu/LINCSelfAdminPrescreen or contact the Project LINC via phone/text at [401-863-6566] to see if you're eligible to earn up to $710. [Protocol # STUDY00000029]