Acceptance and Commitment Therapy on Psychological Flexibility, Values, and Well-Being: A Single-Case Experimental Study (ACT-UNIVALLE)
Acceptance and Commitment Therapy on Psychological Flexibility, Values, and Well-Being
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.
調査の概要
状態
詳細な説明
University students frequently experience elevated levels of emotional distress, including symptoms of anxiety, depression, stress, worry, and psychological maladjustment. Brief interventions based on Acceptance and Commitment Therapy (ACT) have shown promising results in reducing experiential avoidance and cognitive fusion while promoting psychological flexibility and well-being.
The present study evaluates the effects of a brief ACT-based intervention protocol delivered in a group format using a Single-Case Experimental Design (SCED) with repeated measurements across baseline, intervention, and follow-up phases. The intervention focuses on core ACT processes, including acceptance, cognitive defusion, present-moment awareness, values clarification, and committed action.
Participants completed repeated assessments of psychological flexibility processes and well-being indicators across thirteen measurement points distributed throughout the study phases. The investigators hypothesize that the ACT-based intervention will produce reductions in experiential avoidance and cognitive fusion, together with improvements in present-moment awareness, values-based functioning, life satisfaction, and flourishing.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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Valle del Cauca Department
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Cali、Valle del Cauca Department、コロンビア、760032
- Faculty of Psychology, Universidad del Valle
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参加基準
適格基準
就学可能な年齢
- 大人
健康ボランティアの受け入れ
説明
Inclusion Criteria:
University students aged 18 years or older Interest in strengthening mental health and psychological well-being Voluntary agreement to participate in the study
High-risk scores on at least one of the following screening instruments:
Depression Anxiety Stress Scales (DASS-21) General Health Questionnaire (GHQ-12) State Worry Questionnaire-11 (SWQ-11)
Exclusion Criteria:
Current psychological or psychiatric treatment Current use of psychiatric medication Diagnosis related to developmental or learning difficulties Failure to attend intervention sessions Incomplete participation in study assessments
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：処理
- 割り当て：なし
- 介入モデル：単一グループの割り当て
- マスキング：なし（オープンラベル）
武器と介入
参加者グループ / アーム |
介入・治療 |
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実験的：ACT-Based Brief Group Intervention
The intervention consisted of a brief ACT-based group protocol delivered weekly by trained clinical psychologists.
The protocol targeted core ACT processes including acceptance, cognitive defusion, present-moment awareness, values clarification, and committed action.
Sessions incorporated experiential exercises, metaphors, mindfulness practices, reflective activities, and between-session behavioral tasks designed to promote psychological flexibility and psychological well-being in university students.
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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
他の名前：
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
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Mindful Attention Awareness Scale (MAAS)
時間枠：Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks
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The Mindful Attention Awareness Scale (MAAS) is a 15-item self-report questionnaire designed to assess present-moment attention and awareness in daily life.
Items are rated on a 6-point Likert-type scale ranging from 1 ("almost always") to 6 ("almost never").
Total scores are calculated by summing item responses, with higher scores indicating greater mindfulness and present-moment awareness.
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Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks
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Acceptance and Action Questionnaire-II (AAQ-II)
時間枠：Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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The Acceptance and Action Questionnaire-II (AAQ-II) is a 7-item self-report questionnaire designed to assess experiential avoidance and psychological inflexibility.
Items are rated on a 7-point Likert-type scale ranging from 1 ("never true") to 7 ("always true").
Total scores are calculated by summing item responses, with higher scores indicating greater experiential avoidance and psychological inflexibility.
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Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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Cognitive Fusion Questionnaire (CFQ)
時間枠：Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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The Cognitive Fusion Questionnaire (CFQ) is a 7-item self-report questionnaire designed to assess cognitive fusion.
Items are rated on a 7-point Likert-type scale ranging from 1 ("never true") to 7 ("always true").
Total scores are calculated by summing item responses, with higher scores indicating greater cognitive fusion.
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Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
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Valuing Questionnaire - Obstruction Subscale (VQ-Obstruction)
時間枠：Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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The Valuing Questionnaire - Obstruction Subscale (VQ-Obstruction) is a 5-item self-report measure designed to assess barriers and interference with values-based living.
Items are rated on a 7-point Likert-type scale ranging from 0 ("not at all true") to 6 ("completely true").
Higher scores indicate greater obstruction in valued living.
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Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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Satisfaction With Life Scale (SWLS)
時間枠：Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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The Satisfaction With Life Scale (SWLS) is a 5-item self-report questionnaire designed to assess global life satisfaction.
Items are rated on a 7-point Likert-type scale ranging from 1 ("strongly disagree") to 7 ("strongly agree").
Total scores are calculated by summing item responses, with higher scores indicating greater life satisfaction.
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Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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Flourishing Scale (FS)
時間枠：Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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The Flourishing Scale (FS) is an 8-item self-report questionnaire designed to assess psychological flourishing, including meaning in life, interpersonal relationships, competence, and optimism.
Items are rated on a 7-point Likert-type scale ranging from 1 ("strongly disagree") to 7 ("strongly agree").
Total scores are calculated by summing item responses, with higher scores indicating greater psychological flourishing.
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Weekly during baseline (4 weeks), intervention (6 weeks), and follow-up (3 weeks), up to 13 weeks.
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協力者と研究者
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
- Universidad del Valle
- UNIVALLE-ACT-2025 (その他の識別子：Faculty of Psychology, Universidad del Valle)
- Faculty of Psychology (その他の識別子：Faculty of Psychology, Universidad del Valle)
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