Journal of Contextual Behavioral Science最新文献

{"title":"IBstressD: The effect of Acceptance and Commitment Therapy (ACT) on stress reduction in Inflammatory Bowel Disease (A pilot study)","authors":"Andréa Nicholenas ,&nbsp;Joseph Lavelle ,&nbsp;Gregory Mellotte ,&nbsp;Lisa Harpur ,&nbsp;Hugh Mulcahy ,&nbsp;Louise McHugh","doi":"10.1016/j.jcbs.2025.100951","DOIUrl":"10.1016/j.jcbs.2025.100951","url":null,"abstract":"<div><h3>Background</h3><div>This pilot study assessed the feasibility of Acceptance and Commitment Therapy (ACT), delivered through a smartphone app, <em>Psychflex</em>, for reducing stress in patients with Inflammatory Bowel Disease (IBD). Considering the significant burden posed by IBD to physical and psychological functioning and the prevalence of comorbid stress as a potential contributor to disease activity, the inclusion of psychological interventions in the treatment process has become increasingly important.</div></div><div><h3>Method</h3><div>This study uses a Single-Case Experimental Design with three individuals diagnosed with IBD who were experiencing moderate to severe IBD-related stress. Over a period of 25 days, participants were exposed to ACT content daily via <em>Psychflex</em>, a smartphone application, which also measured the level of reported stress using a standardised likert-based stress scale at baseline and post-intervention.</div></div><div><h3>Results</h3><div>These results show a significant decrease in the stress levels of all participants.</div><div>According to the statistical analyses, improvements in stress happened consistently, with a median stress reduction of −2, which is p &lt; .0001.</div></div><div><h3>Discussion</h3><div>Despite difficulties regarding participant recruitment and sample size, the results tentatively show that ACT delivered via a smartphone might prove to be an effective supplementary treatment for IBD patients. These findings give credence to the potential of digital interventions for facilitating greater accessibility to treatment and day-to-day management of chronic health conditions. Future research could study the effect across multiple hospitals and contexts.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100951"},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Derived hierarchical responding. A scoping review","authors":"Jorge Villarroel Carrasco ,&nbsp;Javier Vela ,&nbsp;Beatriz Harana-Lahera ,&nbsp;Carmen Luciano","doi":"10.1016/j.jcbs.2025.100948","DOIUrl":"10.1016/j.jcbs.2025.100948","url":null,"abstract":"<div><div>Hierarchical networks are defined as classes of stimuli (e.g., “living organism”) that include subclasses (e.g., “plants,” “animals”), which in turn contain further sublevels (e.g., “cats,” “dogs,” “trees,” “grass”). This type of responding is relevant in domains such as concept learning, language development, psychopathology, and education, among others. It has been studied from various theoretical perspectives, including behavioral approaches. In this context, Relational Frame Theory (RFT) has facilitated the experimental analysis of such responses by conceptualizing them as derived relational responding. This scoping review analyzes 16 experimental studies that trained hierarchical networks and tested derived relational responses. The studies have been identified following PRISMA-ScR-guided scoping reviews. The review included studies that met these criteria: (1) experimental manipulation of at least one independent variable; (2) training categorization across two or more hierarchical levels; (3) testing derived or untrained responses; and (4) publication in peer-reviewed journals. The review examines training methods, network complexity, and derived responses within the networks. Of the total of studies identified, seven studies trained non-arbitrary classification responses, while nine focused on arbitrary networks. Among these, there was variability in training variables, network structure (number of stimuli, branches, among others), and derived functions tested. Overall, the literature remains scarce and fragmented regarding complex hierarchical responding, especially the derived functions across levels and branches. Future research should clarify training conditions to establish hierarchical responding and further explore its defining features.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100948"},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of psychological flexibility in mindful parenting during the postpartum period: A longitudinal study on the mediating effect of maternal psychopathology","authors":"Helena Moreira ,&nbsp;Tatiana Dias ,&nbsp;Inês A. Trindade","doi":"10.1016/j.jcbs.2025.100950","DOIUrl":"10.1016/j.jcbs.2025.100950","url":null,"abstract":"<div><div>This study aimed to examine whether postpartum depression and anxiety mediated the relationship between psychological flexibility (PF)—measured through its three overarching dimensions: openness to experience, behavioral awareness, and engagement/valued action—and mindful parenting among postpartum women during the COVID-19 pandemic. Additionally, it investigated changes in postpartum anxiety, postpartum depression, and mindful parenting across two time points: before and during a lockdown period.</div><div>A total of 363 mothers of children aged 0–5 months participated in an online longitudinal study. The first assessment (T1) was conducted in December 2020, a period marked by eased COVID-19 restrictions. The second assessment (T2) took place in March 2021, during the third wave of the pandemic, which coincided with a lockdown period. Mothers completed self-report measures of PF (CompACT-18), postpartum anxiety (PSAS-RSF-C), postpartum depression (EPDS), and mindful parenting (IMP-I).</div><div>Behavioral awareness showed a significant indirect effect on mindful parenting through postpartum depression, while openness to experience indirectly influenced mindful parenting through postpartum anxiety. However, the valued action dimension did not significantly predict mothers’ mental health or mindful parenting outcomes. Postpartum depression, postpartum anxiety, and mindful parenting all increased over time.</div><div>These findings suggest that interventions designed to enhance psychological flexibility—particularly by fostering awareness and openness—could be highly beneficial for new mothers, especially in uncertain or high-stress situations such as the COVID-19 pandemic. Acceptance and Commitment Therapy, for example, may not only help postpartum mothers manage their mental health but also enhance their capacity for mindful parenting.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100950"},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Testing a bifactor model of the comprehensive assessment of acceptance and Commitment Therapy Processes (CompACT) in Finnish and British populations","authors":"Ana Gallego ,&nbsp;Jaime Navarrete ,&nbsp;Simone Gorinelli ,&nbsp;Francesca Brandolin ,&nbsp;Päivi Lappalainen ,&nbsp;Nima Golijani-Moghaddam ,&nbsp;David L. Dawson ,&nbsp;Raimo Lappalainen ,&nbsp;Juan V. Luciano","doi":"10.1016/j.jcbs.2025.100952","DOIUrl":"10.1016/j.jcbs.2025.100952","url":null,"abstract":"<div><h3>Introduction</h3><div>Psychological flexibility is a core concept in Acceptance and Commitment Therapy, with several self-report instruments developed to measure it. One multidimensional measure is the Comprehensive Assessment of Acceptance and Commitment Therapy Processes (CompACT). This study is the first to test a bifactor structure of the CompACT providing new insights into its dimensional structure and how scores should be computed. Additionally, the study validates the Finnish version of the instrument.</div></div><div><h3>Methods</h3><div>Data from five distinct non-clinical Finnish (n = 281) and British samples (n = 690) were obtained. The internal structure of the CompACT was examined through confirmatory factor analysis. For the Finnish samples, reliability, construct validity, and sensitivity to change were also performed.</div></div><div><h3>Results</h3><div>The bifactor structure was the best-fitting model across Finnish and British samples, supporting both a general psychological flexibility factor and three specific subcomponents: openness to experience, behavioral awareness, and valued action. The Finnish version of the CompACT demonstrated good internal consistency, strong construct validity, and significant correlations with mindfulness, well-being, stress, and depression measures. Additionally, the measure was sensitive to change in psychological flexibility following ACT-based interventions, with moderate-to-large effect sizes.</div></div><div><h3>Discussion</h3><div>This study represents a significant advancement in the psychometric evaluation of the CompACT, providing the first empirical evidence that a bifactor model offers the optimal structural representation of the measure. The bifactor structure supports, for the first time, the computation of both an overarching psychological flexibility score and subscale scores in the CompACT, reinforcing the theoretical conceptualization of psychological flexibility. These findings contribute to the refinement of psychological flexibility measurement and offer valuable insights for both research and clinical applications. Future studies should further investigate the bifactor model's added value over other established measures of psychological flexibility.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100952"},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Applied knowledge of Acceptance and Commitment Therapy (ACT): Developing and assessing the utility of a Situational Judgement Test (SJT)","authors":"Kathryn Jamison ,&nbsp;David Curran ,&nbsp;Ross White ,&nbsp;Victoria Samuel","doi":"10.1016/j.jcbs.2025.100949","DOIUrl":"10.1016/j.jcbs.2025.100949","url":null,"abstract":"<div><div>Acceptance and Commitment Therapy (ACT) is an innovative form of cognitive behavioural therapy that aims to increase psychological flexibility. Currently, challenges exist with measuring practitioners' application and understanding of ACT. A situational judgement test (SJT) offers a novel approach to assessing a practitioner's ACT consistent knowledge and how it can be applied in practice. In the current research, two consecutive studies were completed to develop and evaluate the utility of the first SJT for assessing clinicians' applied ACT knowledge. First, expert consensus via three iterative rounds of Delphi methodology was used to develop the 10-item ACT SJT: 13 panellists participated in round one, 12 in round two, and 10 in round three. Involved experts specialised in the application of ACT in clinical practice and/or research for at least five years. A second study examined the utility of the developed ACT SJT, with significant pre-post changes in ACT SJT scores following ACT training. The development of the ACT SJT has potentially important implications for both clinical and research settings. It can be used by clinicians to self-evaluate their clinical application of ACT, by trainers evaluating the effectiveness of ACT introductory training, and by researchers investigating the application of ACT-consistent knowledge.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100949"},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Third wave behavioral interventions for individuals with Dementia: A systematic review","authors":"Ty B. Aller ,&nbsp;Heather H. Kelley ,&nbsp;Marissa L. Donahue ,&nbsp;Elizabeth B. Fauth","doi":"10.1016/j.jcbs.2025.100942","DOIUrl":"10.1016/j.jcbs.2025.100942","url":null,"abstract":"<div><h3>Introduction</h3><div>Worldwide, over 10 million individuals are diagnosed with a dementia-related disease each year. Individuals often report increased depression and anxiety after receiving a dementia diagnosis. Third wave cognitive behavioral interventions are beneficial for improving mental health symptoms in persons without dementia. There is not, however, clear conclusions on if these interventions are feasible, acceptable, and effective for individuals with dementia.</div></div><div><h3>Objectives</h3><div>The aim of this preregistered study (<span><span>https://osf.io/u2njw</span><svg><path></path></svg></span>) was to review the feasibility, acceptability, and efficacy of third wave cognitive behavioral interventions for self-reported psychological well-being of individuals with a dementia diagnosis.</div></div><div><h3>Methods</h3><div>A systematic review was carried out on studies examining third-wave cognitive behavioral interventions for individuals with a dementia diagnosis published between 2012 and 2023 using APA PsycINFO, Academic Search Ultimate, Health Source: Nursing/Academic Edition, MEDLINE, Psychology and Behavioral Sciences Collection, Science Reference Center.</div></div><div><h3>Results</h3><div>10 studies met inclusion criteria, of which 7 were unique studies and 3 were supplemental studies using a similar dataset. Most studies took place in the United Kingdom and included varying designs (e.g., single-arm, case study, randomized control trial). A total of 229 participants were included in this review, most of which were diagnosed with either Alzheimer's disease, vascular dementia, mixed dementia, or dementia unspecified. Mindfulness-based interventions were most used (k = 3) and interventions were primarily delivered via group sessions. Adaptations included shortening session intensity (e.g., fewer sessions, fewer activities) and making materials more accessible (e.g., larger fonts, fewer words). The most common outcome assessed was quality of life. Results of studies were mixed; some reported improvements while others reported null or negative outcomes.</div></div><div><h3>Conclusion</h3><div>Third wave behavioral interventions seem to be preliminarily feasible and acceptable for individuals with dementia. The efficacy of these interventions for individuals with a dementia diagnosis is still unclear. Adaptations included basic accessibility considerations. Future research should emphasize the need for more rigorous study design, increased sample sizes, and consistency in intervention adaptations.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100942"},"PeriodicalIF":3.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145267732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"“Finding your values is important. You only die once.” - Analysing goal-talk in incarcerated adolescents struggling with substance use from a Relational Frame Theory perspective","authors":"Ida Mälarstig ,&nbsp;Niklas Törneke ,&nbsp;Tobias Lundgren ,&nbsp;Sven Alfonsson ,&nbsp;Mårten J. Tyrberg","doi":"10.1016/j.jcbs.2025.100947","DOIUrl":"10.1016/j.jcbs.2025.100947","url":null,"abstract":"<div><div>Individually formulated goals are crucial in many therapeutic approaches, yet the underlying processes remain unclear. Relational Frame Theory (RFT) offers a framework for understanding language as a form of operant learning governed by contextual factors. For example, relating to a goal as superior influences the function of subordinate behaviours. The present feasibility study examined the concept of “goal-talk”, i.e., adolescents’ verbal behaviour surrounding goals, using data from interviews with twelve adolescents in compulsory institutional care who had undergone the Adolescent Community Reinforcement Approach (A-CRA). A coding manual was developed through deductive content analysis, and a preliminary exploratory analysis was conducted to examine associations between goal-talk, alignment with personal values, and behavioural change. Coding and analysing goal-talk from an RFT perspective proved feasible, and a higher frequency of goal-talk, particularly appetitive goal-talk, was associated with reductions in substance use and increased alignment with personal values. These findings provide preliminary support for the utility of goal-talk as a concept, but should be interpreted cautiously, given the small, homogeneous sample. Suggestions for further refinement of the coding manual and directions for future research are discussed.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100947"},"PeriodicalIF":3.0,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A pilot feasibility and acceptability study of an online compassion-focused group therapy intervention to treat comorbid eating disorders and PTSD symptoms","authors":"Inge Gnatt ,&nbsp;Jessica L. Mackelprang ,&nbsp;Andrea Phillipou ,&nbsp;Maja Nedeljkovic","doi":"10.1016/j.jcbs.2025.100946","DOIUrl":"10.1016/j.jcbs.2025.100946","url":null,"abstract":"<div><h3>Objective</h3><div>Eating disorders (EDs) and posttraumatic stress disorder (PTSD) commonly co-occur but existing treatments do not effectively address these conditions concurrently. This pilot study describes outcomes of an online compassion-focused group therapy intervention that was adapted for adults experiencing EDs and posttraumatic stress symptoms.</div></div><div><h3>Method</h3><div>Twenty women and one non-binary person with an ED and PTSD symptoms (age 35.68 <em>±</em> 13.61 years) completed a 10-week group-based (five groups) outpatient compassion-focused therapy (CFT) intervention. CFT was delivered online using video conferencing. In addition to ED symptoms and symptoms of PTSD, measures of self-compassion, fears of compassion, compassionate engagement and action, shame, depression, anxiety and stress were administered at baseline (the week prior to commencement), Week 6, endpoint (Week 10), and at 3-month follow up.</div></div><div><h3>Results</h3><div>Across all groups, uptake and attendance was high and completion rates across the five groups averaged 86.7 %. Significant improvement was evident for all variables between baseline and endpoint, with the exception of dietary restraint and anxiety. Symptoms were largely stable or demonstrated further improvement across measures at the 3-month follow-up. All participants stated that they would recommend the intervention to others.</div></div><div><h3>Discussion</h3><div>This study provides preliminary evidence of the feasibility and acceptability of compassion-focused group therapy delivered in an outpatient setting via video conferencing. Results suggest that CFT may be an effective transdiagnostic treatment for reducing aspects of ED and PTSD symptoms. Larger trials are needed to build the evidence base for this novel, telehealth intervention.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100946"},"PeriodicalIF":3.0,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An idiographic comparison of ACT focused on repetitive negative thinking versus non-directive therapy in child generalized anxiety","authors":"Haydi N. Barajas ,&nbsp;Nicolás Farfán ,&nbsp;Laura J. Rodríguez ,&nbsp;Betty Peña-Tomas ,&nbsp;Yury A. Larrea-Rivera ,&nbsp;Yeraldin Gutiérrez ,&nbsp;Sofía Iriarte-Becerra ,&nbsp;Paola A. Rodríguez ,&nbsp;Jaime H. Moreno-Méndez ,&nbsp;Francisco J. Ruiz","doi":"10.1016/j.jcbs.2025.100944","DOIUrl":"10.1016/j.jcbs.2025.100944","url":null,"abstract":"<div><div>Anxiety disorders are common among children, with generalized anxiety disorder (GAD) being one of the most prevalent. Cognitive-behavioral therapy (CBT) has demonstrated efficacy in treating these disorders, but there is still room for improvement. Notably, the most extensively tested CBT intervention is only slightly more efficacious than non-directive therapy (NDT), which is often used as a psychological placebo intervention. Acceptance and commitment therapy (ACT) is an alternative to CBT and is gaining traction as a viable treatment for childhood anxiety disorders. Specifically, a version of ACT that integrates relational frame theory (RFT) in greater depth and targets repetitive negative thinking (RNT) appears particularly suited for addressing GAD in children. This study conducted an idiographic comparison of RNT-focused ACT versus NDT for treating GAD in children aged 8–12 years. The research employed a randomized, two-sample, multiple-baseline design with 17 participants. The interventions were delivered via videoconference and consisted of three 45-min sessions. The results indicated that participants who received the RNT-focused ACT protocol demonstrated greater improvements in emotional symptoms and pathological worry than those who received NDT, as reported by parents and children. The reduction of worry mediated the effect of the RNT-focused ACT intervention for all participants, according to their parents’ reports. In conclusion, brief RNT-focused ACT interventions are promising for treating GAD in children.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100944"},"PeriodicalIF":3.0,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acceptance and commitment therapy can reduce emotional eating behavior in Turkish adults: A randomized controlled trial","authors":"Büşra Kavla ,&nbsp;Yasin Kavla ,&nbsp;Hasan Turan Karatepe","doi":"10.1016/j.jcbs.2025.100943","DOIUrl":"10.1016/j.jcbs.2025.100943","url":null,"abstract":"<div><h3>Purpose</h3><div>Emotional eating (EE) is a significant clinical feature of eating disorders. Acceptance and Commitment Therapy (ACT) is an effective treatment approach for eating disorders. However, the effectiveness of ACT on EE remains unclear. This study aims to develop a new ACT-based intervention and evaluate its effectiveness on EE.</div></div><div><h3>Methods</h3><div>Forty-five females participated and were randomly assigned to either the ACT group (n = 46) or the control group (n = 45). All participants completed validated measures of emotional eating, psychological flexibility, emotion regulation difficulty, and mindful eating at two points: baseline and post-treatment. At one-month follow-up, participants in the ACT group also completed the baseline measures.</div></div><div><h3>Results</h3><div>Post-intervention, EE and psychological inflexibility were significantly reduced, while psychological flexibility and mindful eating were significantly increased in the ACT group compared to the control. At follow-up, the ACT group continued to show significantly lower EE levels.</div></div><div><h3>Conclusion</h3><div>To date, only one study has investigated ACT's effectiveness in addressing EE, using a one-day workshop format, which was considered inadequate for developing acceptance and value clarification skills. This study is the first to adapt traditional ACT practices specifically for EE, with sufficient treatment duration. It is also the first to assess the intervention's impact on psychological flexibility. The results provide preliminary evidence of the potential of an ACT-based approach to reduce EE.</div></div><div><h3>Level of evidence</h3><div>Level I, Evidence obtained from at least one properly designed randomized controlled trial, systematic reviews, and meta-analyses; experimental studies.</div></div>","PeriodicalId":47544,"journal":{"name":"Journal of Contextual Behavioral Science","volume":"38 ","pages":"Article 100943"},"PeriodicalIF":3.0,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145019986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"心理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}