The purpose of this study is to understand social contexts and alcohol use. We hope to learn how being around peers affects alcohol consumption in young adults. About 200 young adults who drink alcohol frequently will take part in the study. This research is being funded by the National Institute on Alcohol Abuse and Alcoholism (NIAAA). Participation involves one in-person screening session with a same-sex platonic friend. Then participants will complete four in-person laboratory sessions where they will drink beverages containing alcohol or no alcohol. After completion of the laboratory sessions, participants will complete smartphone surveys for 28 days. Lastly, they will complete follow-up surveys 6 months and 12 months post-study enrollment.
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Drug Effect Questionnaire (DEQ)
Timeframe: The DEQ will be assessed 30 minutes before alcohol administration, and again 30, 60, 90, 120, 180, and 240 minutes after alcohol administration during each session.
Biphasic Alcohol Effects Scale (BAES)
Timeframe: The BAES will be assessed 30 minutes before alcohol administration, and again 30, 60, 90, 120, 180, and 240 minutes after alcohol administration during each session.
Quantity of Alcohol Use during Ecological Momentary Assessment
Timeframe: Quantity of Alcohol Use will be assessed daily for 28 days.
Past 30-day Alcohol Use during Follow-Up
Timeframe: Past 30-day alcohol use will be assessed 6 and 12 months after the initial laboratory sessions.