Clinical trial Recruiting at 1 site Interventional Ages 12 to 18

ACTsocially: Using Acceptance and Commitment Therapy to help teens with social anxiety and oppositional behavior

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

Run by University of Coimbra · NCT07456631 · Data updated 2026-11-12

This project will test whether a transdiagnostic Acceptance and Commitment Therapy (ACT) program can reduce social anxiety and oppositional defiant behaviors in adolescents who have both conditions.

Quick facts

Study typeInterventional
Ages12 Years to 18 Years
SexAll
Enrollment54 (estimated)
SponsorUniversity of Coimbra
Academic / other
Locations1 site (Coimbra)
StatusRecruiting
StartedSeptember 1, 2023
Main results expectedSeptember 30, 2027
Study endsSeptember 30, 2027
Registry record updatedMarch 10, 2026
Trial IDNCT07456631 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adolescents whose main diagnosis is ODD (and who also meet criteria for SAD) or whose main diagnosis is SAD (and who also meet criteria for ODD), who are not currently receiving another psychological treatment, are the intended participants.

Probably not a fit

Adolescents with autism spectrum disorder, active psychotic symptoms, significant cognitive impairment, or those already enrolled in psychological treatment may be excluded and are less likely to benefit from this protocol.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

The project runs three interventional trials delivering a transdiagnostic ACT program (ACTsocially) to adolescents with primary Oppositional Defiant Disorder who meet criteria for Social Anxiety Disorder, and to adolescents with primary Social Anxiety Disorder who meet criteria for Oppositional Defiant Disorder. Eligible participants are adolescents meeting diagnostic criteria for the target disorders; those with autism spectrum disorder, psychotic symptoms, impaired cognitive development, or who are currently in another psychological intervention are excluded. Outcomes include changes in internalizing and externalizing symptoms and measures of psychological flexibility to compare whether ACT produces similar or different effects across presentations. The intervention is delivered by the research team at the University of Coimbra with follow-up assessments across the treatment period.

Why it matters

Potential benefit: If successful, the program could reduce anxiety and oppositional behaviors and improve peer relationships and daily functioning for adolescents.

How similar studies have gone: ACT has shown benefit for internalizing and externalizing symptoms in adult samples, but randomized adolescent trials of a transdiagnostic ACT targeting both ODD and SAD are limited, making this application relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

Study I:

* Main diagnosis of Oppositional Defiant Disorder (ODD)
* Meeting diagnostic criteria for Social Anxiety Disorder (SAD)

Study II:

* Main diagnosis of Social Anxiety Disorder (SAD)
* Meeting diagnostic criteria for Oppositional Defiant Disorder (ODD)

Exclusion Criteria (applies to both studies):

* Impaired cognitive development based on school records
* Presence of psychotic symptoms according to the diagnostic interview
* Diagnosis of autism spectrum disorder according to the diagnostic interview
* Currently undergoing another psychological intervention for a psychiatric condition

Note: Comorbid conditions other than the co-occurrence of ODD and SAD will not be considered exclusion criteria.

Where it's running

  • Fpceuc
    Coimbra, Portugal
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.