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Acceptance and Commitment Therapy on Psychological Flexibility, Values, and Well-Being: A Single-Case Experimental Study
Sponsor: Universidad del Valle, Colombia
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.
Official title: Acceptance and Commitment Therapy on Psychological Flexibility, Values, and Well-Being
Key Details
Gender
All
Age Range
18 Years - 28 Years
Study Type
INTERVENTIONAL
Enrollment
12
Start Date
2025-04-01
Completion Date
2025-06-30
Last Updated
2026-06-02
Healthy Volunteers
Yes
Conditions
Interventions
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
Locations (1)
Faculty of Psychology, Universidad del Valle
Cali, Valle del Cauca Department, Colombia