What Is Cognitive Defusion? Examples and How to Practice It
What Is Cognitive Defusion?
Examples and How to Practice It
Mental health support in the San Francisco Bay Area | Evidence-based therapy | Acceptance and Commitment Therapy (ACT)
Do you ever find yourself getting completely hooked by your thoughts?
Not just troubled by a thought, but 100% certain it's true. Your brain makes the call and doesn't leave room for questioning. This experience is more common than most people realize. If you don’t already, cognitive defusion is a great skill worth knowing about. Learn a bit more below about how our our mindfulSF therapists use defusion, a skill from Acceptance and Commitment Therapy (ACT) to support you with getting unhooked from your mind and living your life more fully.
So, what how do you define cognitive defusion?
Cognitive defusion is a component of Acceptance and Commitment Therapy (ACT), an evidence-based approach that's been shown significantly in randomized control trails to be effective for experiences such as Obsessive Compulsive Disorder (OCD), generalized anxiety, phobias, social anxiety, trauma, depression, and more.
The basic idea is that you are not your thoughts, but rather the person having them. Cognitive defusion practices can help you feel the difference instead of just knowing it intellectually. The opposite of cognitive defusion is something called cognitive fusion. This is when sticky thoughts and reality basically collapse into each other. You think "I'm a failure" and it doesn't feel like a thought. It feels like a fact. That fusion is what tightens everything up and can get in the way of living life the way you want to (Maisel et al., 2019). Defusion loosens it. Not by arguing the thought away, but by changing how you relate to it.
How is this different than Cognitive Behavioral Therapy (CBT)
Good question. Cognitive Behavioral Therapy (CBT), which most people have at least heard of, tends to work by challenging thoughts. Is this thought accurate? Is there evidence against it? While this kind of rational can be helpful to many people, ACT takes a bit of a different angle. It's less "is this thought true?" and more "does holding onto this thought help me live the way I want to live?" You're not trying to win an argument with your brain. You're just stepping back and observing it (Assaz et al., 2022).
What does it actually look like in real life?
Here are a few examples of fusion vs. defusion:
Fused: "I'm a failure and hopeless." > You feel it in your chest. You don't apply for the job.
Defused: "I'm noticing the thought that I'm a failure." > You still feel the discomfort — but you apply anyway.
Fused: "Nobody likes me." > You cancel plans with friends and stay home.
Defused: "My mind is telling me nobody likes me." > You recognize it as a story your brain is running, not a report on reality. You go to the event because social connection is important to you.
Techniques that ACT therapists may actually use in session
The below aren't just thought experiments. They're practiced, researched exercises you can try out:
1. Label the thought Instead of "I can't do this", try "I'm having the thought that I can't do this." That's it. That little reframe creates a bit of distance for you to have more choices in your responding.
2. Leaves on a stream Picture yourself sitting by a slow-moving stream. Every thought that comes up, imagine putting it on a leaf, and watch it float by. You're not grabbing at the leaves but rather watching them as they pass.
3. Sing it This one may sound ridiculous, and that's kind of the point. Take whatever thought is tormenting you and sing it to the tune of Happy Birthday. It's hard to stay terrified of a thought you just performed at a birthday party (Harris, 2009).
4. Acknowledge your mind as your mind When a challenging thought shows up, say out loud or silently, "Okay, mind." It’s not about agreeing with it but rather acknowledging it without letting it take over.
5. The hands exercise Hold both hands up in front of your face, palms facing you. That's a metaphor for fusion where your view is completely blocked. Now slowly lower them. Your hands are still there, the thoughts are still there, but they're no longer running the show (Harris, 2009).
Who tends to benefit from this?
The effectiveness of cognitive defusion has been studied across many different struggles that include, anxiety, depression, chronic pain, schizophrenia and autism spectrum disorder (Li et al., 2025; Amer et al., 2024; Maisel et al., 2019), and the results are super promising. This is a skill that can help people unhook from stuck loops of self-criticism, dread, or intrusive thoughts. Consider the potential you might have for present moment awareness if you weren’t so hooked into your thoughts.
Working with an ACT therapist in the Bay Area
Reading about cognitive defusion is one thing but building the skill and practicing the skill is another. That's where working with a trained therapist can actually make a meaningful difference. If you're in San Francisco, Oakland, Berkeley, San Jose, or anywhere in the surrounding Bay Area, this kind of evidence-based ACT therapy is available. Follow the link below and let’s connect to see if our services may be helpful to you!
References
Assaz, D. A., Roche, B., Kanter, J. W., & Oshiro, C. K. B. (2018). Cognitive defusion in Acceptance and Commitment Therapy: What are the basic processes of change? The Psychological Record, 68(4), 405–418. https://doi.org/10.1007/s40732-017-0254-z
El-Ashry, A. M., Abd Elhay, E. S., Taha, S. M., Khedr, M. A., Attalla Mansour, F. S., Alabdullah, A. A. S., Farghaly Abdelaliem, S. M., & El-Sayed, M. M. (2024). Effect of applying nursing-based cognitive defusion techniques on mindful awareness, cognitive fusion, and believability of delusions among clients with schizophrenia: A randomized control trial. Frontiers in Psychiatry, 15, 1369160. https://doi.org/10.3389/fpsyt.2024.1369160
Gillanders, D. T., Bolderston, H., Bond, F. W., Dempster, M., Flaxman, P. E., Campbell, L., Kerr, S., Tansey, L., Noel, P., Ferenbach, C., Masley, S., Roach, L., Lloyd, J., May, L., Clarke, S., & Remington, B. (2014). The development and initial validation of the Cognitive Fusion Questionnaire. Behavior Therapy, 45(1), 83–101. https://doi.org/10.1016/j.beth.2013.09.001
Harris, R. (2009). ACT made simple: An easy-to-read primer on Acceptance and Commitment Therapy. New Harbinger Publications.
Hayes, S. C., Strosahl, K. D., & Wilson, K. G. (2011). Acceptance and Commitment Therapy: The process and practice of mindful change (2nd ed.). Guilford Press.
Maisel, M. E., Stephenson, K. G., Cox, J. C., & South, M. (2019). Cognitive defusion for reducing distressing thoughts in adults with autism. Research in Autism Spectrum Disorders, 60, 33–41. https://doi.org/10.1016/j.rasd.2018.12.008
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