Healthy men and women age 18 to 55 are needed to participate in a research study at the Johns Hopkins Bayview Medical Center. You can earn up to $1,780 for completing the study. Participation involves one initial phone screening and a three-hour screening visit. For people who qualify, the study requires an additional four sessions, each lasting about nine hours. Participants will ingest oral THC, CBD, and caffeine and then complete various tests.
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