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Can a phone app help teens cut back on marijuana? new study says maybe.

NCT ID NCT05979272

Disease control Sponsor: Northwestern University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested a smartphone app called TECH designed to help court-involved teens reduce or stop using marijuana. The app is a private online community where teens can support each other anonymously. Researchers enrolled 60 teens aged 14-18 who had used marijuana in the past year. The goal was to see if the app could help them change their behavior and to improve the app for future use.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

60 people

The number who actually took part.

Started

Jun 2023

Finished

Jan 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

14 to 18 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Aged 14 years to 18 years * Able to speak and read English * Have access to a smartphone * Self-report past-year cannabis use * If a minor, able to provide parental consent and child assent Exclusion Criteria for all participants is limited to conditions that would preclude active participation in an intervention study of a mobile app (e.g., psychosis, cognitive impairment, visual impairment).

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Conditions

The condition(s) this trial relates to.

cannabis dependence Marijuana Use

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Adolescent Cannabis use

Contacts and locations

Locations

  • Brown University

    Providence, Rhode Island, 02912, United States

  • Northwestern University Feinberg School of Medicine

    Chicago, Illinois, 60614, United States

  • Rhode Island Family Court

    Providence, Rhode Island, 02903, United States

  • Rhode Island Hospital

    Chicago, Illinois, 60614, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.