Short-term Effects of Cannabis in Adolescents and Young Adults

Primary Objective

The purpose of this study is to learn more about the short-term effects of adolescent and young adult marijuana use on mental health such as memory, attention, impulsivity, and mood.

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If you join the study, you will meet with a research assistant three times over 12 weeks. There will be three study visits (at enrollment, 6 weeks and 12 weeks). At each study visit you will have a blood draw, give a blood spot and urine sample for drug testing, complete computerized tasks, and answer some questions. Each study visit will be about 2 hours long. You will answer questions on your phone by text message or email about your use of marijuana and mood every week. Those questions will take less than 5 minutes to answer each time. We may also ask your parent to participate in the study. If you have a same-sex close-age sibling, they may also be eligible to participate in the study.

Main Procedures Involved: You will be asked questions, complete questionnaires, complete computerized tasks, and give urine and blood samples. For participating in the research study, you will be paid a total of $285.00. Payments will be prorated if you don't complete all parts of the study.

Duration of Participation: Three study visits over 12 weeks plus weekly online surveys.


14 to 25 years


Compensation Provided


CU Anschutz non-hospital research facilities

Study ID

Protocol Number: 19-1375

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