Cited by 43Mindfulness and Compassion InterventionsAnxiety, Depression, Psychometrics, Treatment, Cognitive ProcessesPsychotherapy Techniques and Applications

A Process-Based Analysis of Cognitive Defusion in Acceptance and Commitment Therapy

Open access
Assaz, Daniel A., Tyndall, Ian, Oshiro, Claudia K.B., Roche, Bryan·2023·Behavior Therapy

Abstract

Cognitive defusion is among the main components of Acceptance and Commitment Therapy (ACT), a contextual behavioral approach to psychotherapy. Defusion serves as a middle-level term, and, as such, may be useful for applying and disseminating behavior science, despite its lower precision. However, some authors argue that for middle-level terms in psychotherapy to be useful to clinicians, they need to be clearly linked to basic behavioral concepts, with higher precision; and that this is not currently the case with defusion. Our objective is to increase the pragmatic utility of the concept of "cognitive defusion" by providing a more nuanced, multifaceted and process-based definition of the term. In order to do this, we surveyed the ACT literature regarding defusion and critically examined it through the lens of conceptual analysis. This culminated in a revised and updated conceptualization of defusion in terms of its relationship to basic behavioral concepts, in which defusion is an outcome that may be achieved through different processes.

Integrity signals

Registry

Crossref · 10.1016/j.beth.2022.06.003

Cites

88 of 88 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

6 of 22 cited sources checked · 3 supported · 0 flagged · accuracy not yet measured

  • Background

    Tyndall and colleagues found that a repetition rate of one word per second yielded the greatest reductions in discomfort and believability, which conflicts with an exposure explanation.

    “However, Tyndall et al. (2017) compared the rate of repetition for 30 seconds: 0.5, 1 and 2 words per second.The exposure hypothesis would predict that the third group, given more exposure to the word, would experience larger effects.But, the one word per second group in fact experienced the greatest reductions in thought discomfort and believability.”
    Quote in the paperNot yet classified1 of 1 sources checked
    • cites Tyndall et al., 2017 source
  • Background

    Defusion emerged from the idea that thoughts do not automatically govern behavior and that contextual conditions are needed for such control.

    “An alternative to restructuring, defusion arose from the insight that thoughts do not necessarily exert control over behavior, with some contextual conditions being necessary to support this type of functional behavior-behavior relation (Hayes & Brownstein, 1986).”
    Quote in the paperNot yet classified1 of 1 sources checked
    • cites Hayes & Brownstein, 1986 source

      In “Mental Causality as Behavior-Behavior Relation” (page unavailable), the paper says that a relation between thinking and overt behavior requires analysis of the contingencies that produce it, supporting the claim that thoughts do not automatically control behavior. Our copy does not say that defusion arose from this insight or contrast defusion with restructuring. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • Background

    Middle-level terms sacrifice precision to gain practical usefulness in disseminating behavioral science.

    “All of these are regarded as middle-level terms, concepts that intentionally forsake high precision 2 in favor of pragmatic utility in applying and disseminating behavioral science (Hayes et al., 2012;Vilardaga et al., 2009).”
    Quote in the paperNot yet classified1 of 2 sources checked
    • cites Hayes et al., 2012 source
    • cites Vilardaga et al., 2009 source

      The section on middle-level functional terms (page unavailable) describes them as practical shortcuts for applying behavioral principles and making behavior-analytic knowledge more accessible to non-specialists. It does not say that they intentionally sacrifice precision for that usefulness. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • Method

    The paper calls for more experimental analog studies that manipulate parameters, relational framing types, and experiential training to test and refine the defusion conceptualization.

    “What is needed are more experimental analog studies that go beyond merely evaluating the effects of specific exercises designed to create defusion.Such research could include manipulating distinct parameters within the same procedure to promote defusion, such as execution parameters (Masuda et al., 2009;Tyndall et al., 2017), types of relational framing (Foody et al., 2013;Gil-Luciano et al., 2017;Lo ´pez-Lo ´pez & Luciano, 2017), and experiential training (Mandavia et al., 2015).”
    Quote in the paperNot yet classified2 of 3 sources checked
    • cites Masuda et al., 2009 source
    • cites Tyndall et al., 2017 source
    • cites Foody et al., 2013
  • Background

    Studies have shown that formal stimulus properties, such as word color or speaker voice, can disrupt previously established symbolic functions.

    “More recently, studies demonstrated that formal properties such as the color of a written word or the speaker's voice are capable of interfering and disrupting already established symbolic functions (Kenny et al., 2014;Stewart et al., 2002;Stewart & Lavelle, 2013).”
    Quote in the paperNot yet classified1 of 3 sources checked
    • cites Kenny et al., 2014 source
    • cites Stewart et al., 2002 source

      The Discussion (p. 9) reports that color matching interfered with equivalence responding. It explicitly says the study examined interference with the emergence of derived relations, not disruption of already well-established ones. The passages describe written-stimulus color, not speaker voice. (LLM, conf=0.90)

      Experimental — accuracy not yet measured
    • cites Stewart & Lavelle, 2013 source

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Defusion aims to create distance between the individual and unhelpful thoughts, reducing the power and negative impact unhelpful cognitions have on emotions and behaviours.

    “Defusion is a defining component of psychological flexibility that aims to create distance between the individual and unhelpful thoughts, reducing the power (and negative impact) unhelpful cognitions have on emotions and behaviours (Assaz et al., 2023).”

    From Integrating Acceptance and Commitment Therapy (ACT) with Psychological Skills Training (PST): a case study (2025) · cites this paper as Assaz et al., 2023

    In “Conceptualization Evaluation and Future Research Directions” (page unavailable), the authors describe defusion as reducing thoughts’ control over behavior and list spatial distancing between self and thoughts as one possible pathway. This supports the behavioral part of the paraphrase, but presents distancing as one pathway rather than the general aim of defusion; the cited passages do not establish a reduced impact on emotions. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • ACT facilitates cognitive defusion and acceptance of fear-of-cancer-recurrence-related emotions rather than attempting to alter or suppress them.

    “By encouraging patients to maintain awareness of changes in their thoughts, moods, physical sensations, and behaviors, ACT facilitates cognitive defusion and acceptance of FCR-related emotions, rather than attempting to alter or suppress them (Assaz et al., 2023).”

    From Acceptance and commitment therapy effectiveness for fear of cancer recurrence: A systematic review and meta-analysis. (2025) · cites this paper as Assaz et al., 2023

    In “Cognitive Defusion as an Outcome” (page unavailable), the paper describes ACT defusion as changing how people relate to thoughts and other private events rather than changing their form or frequency. “Procedures to Promote Cognitive Defusion” (page unavailable) also describes exercises for observing thoughts. The paper does not specifically address fear of cancer recurrence or establish that ACT promotes acceptance of FCR-related emotions, so the claim extends its general account to a condition it does not discuss. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Defusion might be best considered an outcome rather than a procedure or process.

    “Although discussed as a procedure, process, and outcome, defusion might be best considered an outcome (Assaz et al., 2023).”

Cites

Flagged first, then by citations

2 of the 90 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. Hayes, 2022, Defusion and acceptance as treatment processes in cognitive behavioral therapy, Cognitive and Behavioral Practice
  2. Martinez-Sanchez, 1996, Interactions of contingencies and instructional history on conditional discrimination, The Psychological Record, 46, 301

Cited by

Sorted by citations

Authors
Assaz, D. A., Tyndall, I., Oshiro, C. K. B., & Roche, B.
Affiliations
  • Universidade de São Paulo (BR)
  • University of Chichester (GB)
  • National University of Ireland, Maynooth (IE)
Corresponding author
Assaz, Daniel A.
Venue
Behavior Therapy
Publisher
Elsevier BV
Published
2023-11
Volume
54
Issue
6
Pages
1020-1035
ISSN
0005-7894 (ISSN-L)
OpenAlex
W4283319228
Cited by
43
References
90
Citations by year
2026: 10 · 2025: 14 · 2024: 9 · 2023: 6 · 2022: 4
FWCI
7.53
Type
journal article
Language
en
Locations
  • Behavior Therapy (publishedVersion)
  • PubMed (publishedVersion)
  • ChiPrints (University of Chichester) (acceptedVersion)
  • Maynooth University ePrints and eTheses Archive (Maynooth University) (submittedVersion)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Mindfulness and Compassion Interventions
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Social Sciences › Psychology › Clinical Psychology › Psychotherapy Techniques and Applications
Keywords
cognitive defusion, acceptance and commitment therapy, selective attention, relational coherence, reinforcement, extinction, conceptual analysis
MeSH terms
Cognition, Humans, Psychotherapy, Surveys and Questionnaires, Cognitive Behavioral Therapy, Acceptance and Commitment Therapy

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