Developing and Strengthening Cannabis Warnings: Warning Message Testing (NCT07699198)
🩺 Plain-English Summary (8th-Grade Level)
The purpose of this activity is to identify promising cannabis warning messages from different themes. Participants will be adults who live in the United States, including both people who use cannabis and those who do not use cannabis. In an online within-subjects experiment, participants will be randomly assigned to view 7 cannabis warning messages from different themes developed as part of previous study activities. After viewing each cannabis warning message, participants will rate the message on awareness, clarity, believability, cognitive elaboration, perceived message effectiveness, and reactance. The survey will take 15-20 minutes.
Who can join: Review the eligibility criteria below.
Location: University of North Carolina at Chapel Hill — Chapel Hill, North Carolina
Age range: 18 Years
🧪 Interventions in This Study
- Constituents (BEHAVIORAL)
- Cognitive Functioning (BEHAVIORAL)
- Cardiovascular Health (BEHAVIORAL)
- Motor Vehicle Crashes (BEHAVIORAL)
- Dependence (BEHAVIORAL)
- Psychosis and Schizophrenia (BEHAVIORAL)
- Mental Health (BEHAVIORAL)
- Reproductive Health (BEHAVIORAL)
- Respiratory Health (BEHAVIORAL)
- Edibles (BEHAVIORAL)
- Cannabis Hyperemesis Syndrome (BEHAVIORAL)
- Control (BEHAVIORAL)
📋 "Do I Qualify?" — 1-Minute Self Screener
Instant ChecklistFull eligibility criteria are available on the official NIH protocol. View the criteria ↗
📍 All Participating Trial Locations (1 Sites)
- University of North Carolina at Chapel Hill — Chapel Hill, North Carolina
📞 Contact the Study Coordinator
Phone: (919) 974-4980
Email: kowitt@unc.edu
Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.
💰 Cost, Insurance & Patient Rights
- 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
- Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
- Voluntary Participation: You may withdraw at any time without affecting your standard medical care.
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💡 How to Participate
- Check the checklist above to see if you may qualify.
- Contact the study coordinator using the phone/email above.
- Ask about the visit schedule, what is covered at no cost, and any travel support.
- Confirm with your own doctor before making a decision.