This is an exploratory study that will adapt and test a combined cognitive behavioral treatment and contingency management intervention for alcohol and/or marijuana abuse for use in HIV-infected adolescents.

Inclusion Criteria:

• Adolescents between the ages of 16-24 years (inclusive) at the time of informed consent/assent as determined by medical record review or verbal verification from referring professional
• HIV-infected and aware of their status as documented by medical record review or verbal verification from referring professional
• Receives services at one of the three participating ATN clinic site or their community partners
• A score of 2 or greater on the CRAFFT indicating possible alcohol or marijuana use problem or abuse
• Alcohol and/or Marijuana Use or Abuse Disorder as indicated by the SSPQ-X
• Appropriate for an outpatient or intensive outpatient level of care in accordance with the American Academy of Child and Adolescent Psychiatry practice parameters as decided by site mental health provider in consultation with Drs. Brown and Esposito-Smythers
• English-speaking
• Ability and willingness to provide informed consent/assent for study participation
• Satisfactorily understands the nature of the study and the informed consent process as documented by the Consent Form Comprehension Assessment Questionnaire

Exclusion Criteria:

• Presence of serious psychiatric symptoms (e.g., active hallucinations, thought disorder)
• Visibly distraught (e.g., suicidal, homicidal, exhibiting violent behavior)
• Intoxicated or under the influence of alcohol or other substances at the time of study entry