Target Demographics: 125 US youth, 15-20 years old (including 20)
FID: 89389
Inclusion Criteria for All Participants:
- Male, Female or Non-Binary
- Between 15 and 18 years old at the time of consent/assent
- Fluent in English
- Access to a smartphone
- Ability to engage in research procedures
- Any drug or alcohol use in the three months prior to enrollment
Exclusion Criteria for All Participants:
- Infrequent access to smartphone (e.g. only allowed use of personal smartphone on weekends)
- Daily substance use
- Inability to obtain parental/guardian consent for participants 15-17 years of age