Adults (ages 18+) who would like to reduce their cannabis use (N=224) will be enrolled in an 8-week treatment program. All participants will receive counseling (1 goals session with a therapist followed by 7 weekly computerized cognitive-behavioral therapy sessions). Detailed cannabis assessments (biological and self-report) will be conducted throughout treatment and at 1-, 2-, and 3-months post-treatment completion. Daily electronic diaries will be administered via text message to record detailed logs of cannabis use quantity and frequency. Salivary samples will be collected (and video observed) daily throughout treatment to analyze for progesterone.

Eligible participants (ages 18+ whom have daily cigarette use) will attend an in-person assessment (though some aspects of the study, including consent, can be completed remotely). Participants will submit a breath sample for assessment of expired carbon monoxide. Approximately 5-7 days after completion of the in-person assessment, participants will meet with research staff. A medical clinician will meet with the participant to present a smoking cessation treatment recommendation along with resources. Participants will also complete surveys to assess their treatment preferences, motivation, and self-efficacy following receipt of the recommendation.

This study is an 8-week cannabis reduction trial among adults (ages 18+; N=176) with CUD who are interested in reduction to assess effects of cannabis reduction on: 1) cannabis-related problems and consequences, 2) objective measures of sleep and cognitive performance, and 3) patient-reported improvements, including quality of life and CUD severity. All participants will receive CUD treatment and cannabis use will be comprehensively assessed via detailed self-report and urinary cannabinoids.All participants will receive cognitive behavioral treatment (CBT4CBT- a computerized cognitive behavioral therapy) enhanced with motivational interviewing, brief counseling, and financial incentives provided on a sliding scale for demonstrating reduction in urinary cannabinoids.