Participants in this study must be age 18–55. They will first complete an in-person screening session lasting three hours to determine study eligibility. Participants who are eligible and agree to be in the study will orally consume a liquid that contains substances found in cannabis, including CBD and THC. Participants will use their assigned drug once in the lab in a session lasting about seven hours, and also at home twice per day over the 14 days after the first session. During this 14-day period, participants will visit the lab again for one-hour visits on days 2, 7, and 14. They will also do a final visit, one hour long, one week later (on day 21).
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