An interventional study of Brief Motivational Mobile Health (mHealth) Intervention and Psychoeducational Attention Control (AC) in Cannabis Use, sponsored by University of Washington. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years to 29 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-06-03.
Sponsored by University of Washington · Not applicable, Interventional, and Prevention
The study aims to develop a novel brief motivational mobile health (mHealth) intervention for frequent and/or high-intensity cannabis use for non-collegiate young adults. A total of 120 young adults (ages 18-29, not enrolled at or attending a 4-year college or university) will be randomized to receive a mHealth intervention with text messages for five weeks or to an online resource/program with psychoeducation information about cannabis. The mHealth intervention will focus on prompting the young adult to reflect on their journey with cannabis and to reflect on their personal goals and how cannabis is reflected in these goals. Additional mini-modules are included related to topics such as motivations for use, perceived norms and tracking cannabis use. Participants will return to the program each week to reflect on the prior week and reflect on goals for the upcoming week. All participants will complete a program satisfaction survey and complete follow-up assessments at 3- and 6-months post-program.
University of Washington is the lead sponsor of 1,397 studies on the registry; 225 are open to participants now.
Of its 154 completed or terminated interventional studies of FDA-regulated products, 132 (86%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Participants randomized to the Brief Motivational mHealth intervention will experience a five week self-directed web-based intervention with text messages.
Behavioral: Brief Motivational Mobile Health (mHealth) Intervention
Participants randomized to the control group will receive a program to learn more about psychoeducational information about cannabis. They will receive psychoeducational material via text messages.
Other: Psychoeducational Attention Control (AC)
Participants randomized to the mHealth intervention condition will receive a five-week online program that incorporates weekly text messages. The program will begin with prompting the young adult to reflect on their journey with cannabis and to reflect on their personal goals and how cannabis is reflected in these goals and how their social network may support their goals. Additional mini-modules are included related to topics such as motivations for use, perceived norms and tracking cannabis use. Text messages will be sent weekly to return to the program to prompt reflection and support any goals the participant indicates.
Participants randomized to the control group will receive a program to learn more about psychoeducational information about cannabis. They also receive psychoeducational material via text messages.
Cannabis use - typical hours high in a week
The count of the self-reported typical number of hours high per week during the past month
Time frame: Baseline, 3-month follow-up, 6-month follow-up
Negative cannabis-related consequences
Total sum score on the Marijuana Consequences Checklist based on number of self-reported cannabis-related consequences experienced in the past month. Higher scores indicate reporting greater number of negative cannabis-related consequences.
Time frame: Baseline, 3-month follow-up, 6-month follow-up
Cannabis use - Number of sessions
Self-reported number of times/sessions used cannabis on the typical day during the past month
Time frame: Baseline, 3-month follow-up, 6-month follow-up
This study is active, not recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.
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