Alcohol and "Heat of the Moment" Sexual Decision Making

HIV transmission remains a significant public health concern, especially among men who have sex with men (MSM). Condomless anal intercourse (CAI) continues to be the major route of transmission for MSM. Thus, to reduce the incidence of HIV, it is critical to identify how contextual risk factors influence CAI and develop behavioral strategies that modify risk factors directly or reduce their influence on behavior. This study will examine the mechanisms through which one of the central contextual risk factors, heavy drinking, influences sexual decision processes in the natural environment and test the benefit of a brief intervention designed to reduce sexual risk behavior among those who engage in heavy drinking.

Inclusion Criteria: * At least 18 years of age * Cisgender man who has had condomless anal intercourse with another man in the past 3 months * Engaged in heavy drinking (assessed by either weekly National Institute on Alcohol Abuse and Alcoholism guidelines \[\> 14 for men\], and/or a heavy drinking episode in the past month \[\> 4 drinks on an occasion\]) * Has a smartphone Exclusion Criteria: * HIV-infection * Currently using PrEP * In an exclusive monogamous sexual relationship * History of bipolar disorder, schizophrenia, other psychotic disorder, or current suicidal intent * Current treatment for alcohol use disorder or substance use disorder * Unable to provide one or more individuals who can serve as an alternate contact