Oppositional Defiant Clinical Trials

12 recruitingLast updated: May 13, 2026

There are 12 actively recruiting oppositional defiant clinical trials across 7 countries. Studies span Not Applicable, Phase 1, Phase 2. Top locations include Tampa, Florida, United States, Toronto, Ontario, Canada, Guelph, Ontario, Canada. Updated daily from ClinicalTrials.gov.


Oppositional Defiant Trials at a Glance

12 actively recruiting trials for oppositional defiant are listed on ClinicalTrialsFinder across 6 cities in 7 countries. The largest study group is Not Applicable with 8 trials, with the heaviest enrollment activity in Tampa, Toronto, and Guelph. Lead sponsors running oppositional defiant studies include University of South Florida, Karolinska Institutet, and IRCCS Eugenio Medea.

Browse oppositional defiant trials by phase

Treatments under study

About Oppositional Defiant Clinical Trials

Looking for clinical trials for Oppositional Defiant? There are currently 1 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Oppositional Defiant trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Oppositional Defiant clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 112 of 12 trials

Recruiting
Not Applicable

Testing a Measurement Feedback App to Improve Data Quality, Supervision & Outcomes in Behavioral Health

AutismADHDOppositional Defiant Disorder+1 more
University of Pennsylvania200 enrolled1 locationNCT07042347
Recruiting
Phase 1Phase 2

Pathways 2 Success

Conduct DisorderOppositional Defiant Disorder
University of Minnesota120 enrolled1 locationNCT06831123
Recruiting
Not Applicable

Matching Assessment and Treatment for Children With Disruptive Behaviour and Their Parents

Attention Deficit Hyperactivity DisorderEmotional DisorderConduct Disorder+3 more
Centre for Addiction and Mental Health200 enrolled1 locationNCT06373484
Recruiting
Not Applicable

ACTsocially: The (Dis)Similarities of ACT for Changing Internalizing and Externalizing Symptomatology in Adolescence

Oppositional Defiant DisorderSocial Anxiety Disorder (SAD)
University of Coimbra54 enrolled1 locationNCT07456631
Recruiting
Not Applicable

Step-by-Step: Evaluation of a Stepped Care Model

AggressionDisruptive BehaviorAnger+3 more
Karolinska Institutet210 enrolled1 locationNCT06902649
Recruiting

Assessing Real Life Effectiveness of Treatment in Neurodevelopmental Disorders

Emotional DysregulationConduct DisorderExternalizing Problems+3 more
IRCCS Eugenio Medea80 enrolled1 locationNCT07273695
Recruiting

A co-designed school-based early intervention involving parent-teacher collaboration to improve mental health and wellbeing in diverse children with disruptive disorders

Mental HealthConduct DisorderOppositional Defiant Disorder+2 more
Professor Eva Kimonis, University of New South Wales211 enrolled1 locationACTRN12625000237482
Recruiting
Not Applicable

SLEEP-COPE: Sleep Intervention for Oppositional Children

Insomnia ChronicOppositional Defiant Disorder
University of South Florida25 enrolled1 locationNCT06350292
Recruiting
Not Applicable

Digital Dyadic Family Based Intervention to Improve Sleep in Children with ODD and Their Parents: NiteCAPP SINCC (Pilot)

Insomnia ChronicOppositional Defiant Disorder
University of South Florida30 enrolled1 locationNCT06410495
Recruiting
Not Applicable

Big Feelings: A Study on Children's Emotions in Therapy

Depressive DisorderAnxiety DisordersMood Disorders+5 more
University of Guelph202 enrolled2 locationsNCT05637320
Recruiting
Not Applicable

Emotion Regulation as a Moderator of Two Different Treatments for Children With ODD

Oppositional Defiant Disorder
University of Iceland196 enrolled1 locationNCT06194994
Recruiting

Improving mental health outcomes through parent and teacher engagement in school-based early intervention

Conduct DisorderOppositional Defiant DisorderDisruptive Behaviour Disorder+1 more
Professor Eva Kimonis192 enrolled1 locationACTRN12619000967189