Contingency Management Helped People with Mental Health Disorders Reduce Cannabis Use

A systematic review of 6 studies found that contingency management, which provides rewards for abstinence, was effective at reducing cannabis use in people with co-occurring psychotic disorders or major depression.

Rodas, Justyne D et al.·Brain sciences·2022·Moderate EvidenceSystematic Review
RTHC-04177Systematic ReviewModerate Evidence2022RETHINKTHC RESEARCH DATABASErethinkthc.com/research

Quick Facts

Study Type
Systematic Review
Evidence
Moderate Evidence
Sample
Not reported

What This Study Found

Contingency management produced cannabis use reductions and periods of abstinence in individuals with psychotic-spectrum disorders or major depressive disorder. The approach specifically reinforced target behaviors like confirmed abstinence from cannabis.

Key Numbers

6 studies met inclusion criteria. Diagnoses included psychotic-spectrum and major depressive disorders. CM was efficacious for cannabis use reduction and abstinence in these populations.

How They Did This

Systematic search of PubMed, PsycINFO, and EMBASE through November 2022. Identified 6 studies examining contingency management effects on cannabis use, clinical outcomes, cognitive function, and psychosocial functioning in patients with co-occurring CUD and mental health disorders.

Why This Research Matters

Cannabis use disorder in people with mental illness is associated with worse symptoms, poorer treatment response, and reduced functioning. Despite this, few treatments have shown efficacy for this specific population. Contingency management may fill this gap.

The Bigger Picture

Contingency management has strong evidence for other substance use disorders but has been less studied for cannabis, especially in dual-diagnosis populations. These findings suggest it deserves broader implementation and further research.

What This Study Doesn't Tell Us

Only 6 studies met criteria, reflecting limited research in this area. Studies were small and varied in design. Long-term follow-up data were lacking. Other psychiatric populations (anxiety disorders, PTSD) were not represented.

Questions This Raises

  • ?Would CM be effective for cannabis use in people with anxiety disorders or PTSD?
  • ?What reward schedules work best for cannabis abstinence?
  • ?Can CM be combined with other interventions for additive effects in dual-diagnosis patients?

Trust & Context

Key Stat:
CM produced cannabis reduction and abstinence in psychosis and depression patients
Evidence Grade:
Moderate: systematic review methodology, but only 6 small studies were available.
Study Age:
Published in 2022.
Original Title:
Contingency Management for Treatment of Cannabis Use Disorder in Co-Occurring Mental Health Disorders: A Systematic Review.
Published In:
Brain sciences, 13(1) (2022)
Database ID:
RTHC-04177

Evidence Hierarchy

Meta-Analysis / Systematic ReviewCombines many studies into one answer
This study
Randomized Controlled Trial
Cohort / Case-Control
Cross-Sectional / Observational
Case Report / Animal Study

Analyzes all available research on a topic using a structured method.

What do these levels mean? →

Frequently Asked Questions

What is contingency management?

Contingency management provides tangible rewards (like vouchers or prizes) when patients achieve specific goals such as confirmed drug abstinence. It leverages positive reinforcement to motivate behavior change.

Does it work for people with both cannabis problems and mental illness?

Yes. This review found contingency management reduced cannabis use in people with psychotic disorders and major depression, populations where standard treatments often have limited success.

Read More on RethinkTHC

Cite This Study

RTHC-04177·https://rethinkthc.com/research/RTHC-04177

APA

Rodas, Justyne D; Sorkhou, Maryam; George, Tony P. (2022). Contingency Management for Treatment of Cannabis Use Disorder in Co-Occurring Mental Health Disorders: A Systematic Review.. Brain sciences, 13(1). https://doi.org/10.3390/brainsci13010036

MLA

Rodas, Justyne D, et al. "Contingency Management for Treatment of Cannabis Use Disorder in Co-Occurring Mental Health Disorders: A Systematic Review.." Brain sciences, 2022. https://doi.org/10.3390/brainsci13010036

RethinkTHC

RethinkTHC Research Database. "Contingency Management for Treatment of Cannabis Use Disorde..." RTHC-04177. Retrieved from https://rethinkthc.com/research/rodas-2022-contingency-management-for-treatment

Access the Original Study

Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.

This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.