Parent Inclusion Criteria:  Has a valid New Mexico medical marijuana card A biological or adoptive parent, step-parent or other parent figure who serves as the primary caregiver of a 13- to 17-year-old adolescent Parents and youth live together at least 40% of the time (i.e., minimum of 3 days per week) Reside in the greater Albuquerque, New Mexico area Has sufficient residential stability to permit probable contact at follow-up (e.g., not homeless at time of intake) Has sufficient English language skills to participate in the interventions and complete assessments  Adolescent inclusion criteria:  Reports marijuana use on at least one occasion Has sufficient English language skills to complete assessments  Parent exclusion Criteria:  Parent appears to have insufficient cognitive functioning to understand consent process, assessments and interventions Currently in drug treatment for a cannabis or other substance use disorder, whether medical or non-medical, and (3) a spouse or parenting partner is already enrolled in the study.  Adolescent exclusion criteria:  Has a valid New Mexico medical marijuana card Reports weekly use of an illicit drug (i.e., excluding alcohol, tobacco, or marijuana) Appears to have insufficient cognitive functioning to understand assent process and assessments A sibling is already participating in the study