has subject area Adolescent Adolescent Behavior - Underage Drinking Alcohol Drinking Alcohol Drinking - Underage Drinking Behavioral Disciplines and Activities - Motivational Interviewing Cannabis Ethanol Health Services - Motivational Interviewing Humans Molecular Mechanisms of Pharmacological Action - Cannabinoid Receptor Agonists Physiological Effects of Drugs - Cannabinoid Receptor Agonists Physiological Effects of Drugs - Hallucinogens Psychology, Applied - Motivational Interviewing Psychotropic Drugs - Hallucinogens Social Problems - Underage Drinking