Predictors and outcomes of using cannabis and alcohol at the same time in daily life
Official title: Predictors and Outcomes of Simultaneous Cannabis with Alcohol Use in Daily Life
Funded at Arizona State University-Tempe Campus · NIH-11367613 · Data updated 2026-11-12
A daily-life study with young adults to understand what leads to and happens after using cannabis and alcohol together, to pave the way for timely help in real-world settings.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Arizona State University-Tempe Campus NIH-funded |
| Lab location | 1 site (Scottsdale, United States) |
| Project start | June 1, 2026 |
| Project end | March 31, 2031 |
| Funding year | 2026 |
| Award (this year) | $691,107 |
| NIH project number | 1R01DA063609-01A1 |
| Project ID | NIH-11367613 on NIH RePORTER |
Who could benefit from this research
✓Could help
Emerging adults (likely 18–25) who regularly use cannabis and alcohol together and are willing to use a smartphone app for EMA.
✕Less likely to help
Individuals not engaging in simultaneous cannabis and alcohol use or unwilling to participate in mobile EMA prompts.
What this research studies
This project will recruit about 300 emerging adults who regularly use both cannabis and alcohol. It uses a smartphone app to collect real-time reports over two 28-day periods at baseline and again one year later, tracking when simultaneous use starts and what follows. Participants will answer event-based prompts about initiation, in-the-moment effects, and longer-term outcomes to map the sequence of events. The goal is to identify moment-by-moment indicators that could trigger just-in-time interventions to reduce harm.
Why it matters
Potential benefit: If successful, the study could inform real-time support tools that help young adults avoid or minimize harm when both substances are used together.
How similar studies have gone: Prior EMA studies have shown feasibility for real-time data collection in substance use, with potential for informing timely interventions.
Where this research is happening
-
Arizona State University-Tempe Campus
Scottsdale, United States Active
Researchers
- Principal investigator: Waddell, Jack T — Arizona State University-Tempe Campus
- Study coordinator: Waddell, Jack T
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About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.