Retraining automatic attention and approach tendencies to reduce levels of problematic cannabis and alcohol use for youth in juvenile detention centers.

INTERVENTION: 5 sessions of CBM comprised of two computerized tasks, an Approach‐Avoid task to target approach biases and a Visual Probe task to target attention biases. CBM is done in addition to care‐as‐usual. Participants receive either an active training version or a placebo version of either task. CONDITION: Juvenile delinquents, Cognitive bias modification, Substance use ; ; PRIMARY OUTCOME: ‐ Level of problematic cannabis use (CUDIT‐R); ; ‐ Level of problematic alcohol use (AUDIT) SECONDARY OUTCOME: ‐ Approach bias (AAT scores) ; ; ‐ Attention bias (VPT scores) ; ; ‐ Self‐reported delinquency (ISRD) ; ; ‐ Criminal recidivism (police records) INCLUSION CRITERIA: Youth placed in one of the participating institutions are eligible for inclusion in our screening measurement, provided they have been there for at least two weeks. Youth who report substance use (cannabis and/or alcohol) during the 12 months prior to our screening measurement are eligible for inclusion in our CMB training.