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Acceptance and Commitment Therapy on Psychological Flexibility, Values, and Well-Being: A Single-Case Experimental Study

NCT07620483 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 12

Last updated 2026-06-02

No results posted yet for this study

Summary

The goal of this clinical trial is to evaluate the effects of a brief Acceptance and Commitment Therapy (ACT)-based group intervention on psychological flexibility, values-based functioning, and psychological well-being in university students aged 18 to 28 years presenting elevated levels of emotional distress and psychological risk indicators.

The main questions it aims to answer are:

Does a brief ACT-based intervention reduce experiential avoidance and cognitive fusion in university students? Does the intervention improve present-moment awareness, values-based functioning, life satisfaction, and psychological flourishing?

Participants will:

Complete repeated self-report assessments across 13 measurement points distributed throughout baseline, intervention, and follow-up phases.

Participate in five weekly ACT-based group intervention sessions delivered by trained clinical psychologists.

Engage in experiential ACT exercises focused on acceptance, mindfulness, cognitive defusion, values clarification, and committed action.

Complete between-session activities and behavioral practices related to the ACT processes addressed during the intervention.

Participate in follow-up assessments to evaluate maintenance of treatment effects over time.

Conditions

  • Psychological Flexibility
  • Emotional Distress
  • Psychological Well-Being
  • Experiential Avoidance
  • Cognitive Fusion

Interventions

BEHAVIORAL

Acceptance and Commitment Therapy (ACT)-Based Brief Group Intervention

The intervention consisted of a brief group-based Acceptance and Commitment Therapy (ACT) protocol designed to promote psychological flexibility and psychological well-being in university students presenting elevated emotional distress and psychological risk indicators. The protocol was grounded in the functional contextual approach and targeted core ACT processes, including acceptance, cognitive defusion, present-moment awareness, values clarification, and committed action. Participants were organized into small groups of 5 to 8 individuals and attended five weekly intervention sessions conducted by trained clinical psychologists with at least five years of clinical experience. Prior to implementation, therapists completed specialized ACT training delivered by an expert clinician with extensive experience in Acceptance and Commitment Therapy. The intervention protocol included an initial preliminary session focused on motivational engagement, informed consent procedures, feedback rega

Sponsors & Collaborators

  • Universidad del Valle, Colombia

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
28 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-04-01
Primary Completion
2025-06-15
Completion
2025-06-30

Countries

  • Colombia

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07620483 on ClinicalTrials.gov