The study aims are to:
1. Assess cMET feasibility and acceptability and estimate its effect size on underage drinking. Hypothesis: Among 14- to 20-yr-old primary care patients, those receiving cMET will have lower rates of any alcohol use, days of alcohol use, drinks per drinking day, and days of heavy episodic drinking, than those receiving treatment as usual.
2. Estimate effect sizes for tobacco, cannabis, and other drug use, and other substance-related risks and outcomes including substance-related driving/riding, and experience of substance-related problems.
3. Identify potential moderators and mediators of cMET's effect.
