The Less is More Study

Inclusion Criteria:

* Frequent alcohol use in the past 30 days based on responses on the Timeline Followback (TLFB; Sobell and Sobell, 2003)
* HIV positive
* Fluency in English
* Willingness to attempt alcohol abstinence for at least 30 days and then to attempt alcohol use on fewer days than at baseline after that
* Willingness to use smartphone applications and biosensor devices (i.e., breathalyzer device and wrist sensor) for alcohol use reduction purposes in the study. If participants do not have a compatible smartphone to use, they will be loaned one by the study

Exclusion Criteria:

* Psychiatric conditions that would interfere with participation in the study
* Current alcohol withdrawal as indicated by a score of 8 or higher on the Clinical Institute Withdrawal Scale (CIWA; Sullivan et al., 1989) or lifetime history of medically assisted detoxification
* Two positive breath alcohol concentration (BrAC) readings (i.e., \> 0.00%) at an in-person screening appointment. After participants blow their first positive BrAC, they will be allowed to reschedule and participate at another time, however if they blow a second positive BrAC, they will be excluded from this study and offered referrals for alcohol treatment.
* Currently seeking or past-12-month history of inpatient or intensive treatment for addictive behaviors
* Psychosis or other severe psychiatric disability
* Pregnancy, nursing or lack of reliable birth control use for women who have not yet reached menopause