Prior to and following each administration of the AAT, participants will complete a rating of their current feelings of craving to use drugs on a 6-point scale ranging from I don't want to use drugs at all to I would love to use drugs right now. If the participant endorses a 4 or higher on the scale following presentation of the AAT, they will be queried by research staff who will be trained in basic cognitive behavioral techniques to assist the participant in reducing any feelings of craving. As participants are actively engaged in treatment for substance use problems (i.e., consistently thinking and talking about drug use), it is unlikely that words or pictures of drug-related stimuli will elicit sufficient craving to trigger a relapse. Also, all participants will either be in the presence of or near a parent and/or regular treatment provider, further minimizing the risk that any procedures would elicit a relapse.