The purpose of this study is to examine the feasibility, acceptability, and preliminary efficacy of a digital intervention for co-occurring cannabis use and depression. Participants will be randomized to complete Amplification of Positivity - Cannabis Use (AMP-C) or symptom tracking. The main outcomes will include changes in depressive symptoms and cannabis use, as well as usability ratings.
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Change in Depressive Symptoms (Patient Health Questionnaire-9; PHQ-9)
Timeframe: Baseline, Primary Endpoint: Post-Intervention (approximately one week after completing intervention), Secondary Endpoints: Intervention Midpoint (4 weeks into intervention), 1-, 3-, 6-, and 12-months after completing intervention
Change in Cannabis Use Frequency (Daily Sessions, Frequency, Age of Onset, and Quantity of Cannabis Use Inventory; DFAQ-CU)
Timeframe: Baseline, Primary Endpoint: Post-Intervention (approximately one week after completing intervention), Secondary Endpoints: Intervention Midpoint (4 weeks into intervention), 1-, 3-, 6-, and 12-months after completing intervention
Usability (System Usability Scale; SUS)
Timeframe: Post-Intervention (approximately one week after completing intervention)