Specific Aim 1. Using a dismantling randomized design, compare intervention conditions to determine those components essential for optimizing substance use and mental health: a) Strengths-Based Outreach and Advocacy (SBOA), b) Motivational Interviewing (MI)/Community Reinforcement Approach (CRA), c) SBOA+MI/CRA, and d) Services As Usual (SAU). Hypothesis. Youth assigned to SBOA+MI/CRA will show better short and long-term outcomes on Opioid Use Disorder prevention and on other substance use and mental health outcomes than youth assigned to either intervention alone or Services As Usual.
Specific Aim 2. Test whether intended change processes (social stability, psychosocial resources, stress) produce the desired change on substance use and mental health. Hypothesis. Inasmuch as the interventions trigger successful increases in social stability and psychosocial resources and reductions in stress, targeted outcomes will improve.
Specific Aim 3. Explore how the moderators of age, sex, race/ethnicity, sexual/gender minority status, and experience of childhood abuse and neglect influence intervention response.
Specific Aim 4. Determine cost effectiveness of the intervention approaches.
