ACT Module 2 - Defusion

This is an On Demand course that will include text posts, teaching videos, handouts, links and more.  You will need an internet browser and a program that can open PDF files.

This course provides a look at defusion, which is a key concept in the ACT model.  Through the use of text posts, videos and related materials, participants will have an opportunity to learn the three main steps of defusion and then how to apply techniques that help clients gain awareness, think more pragmatically, and respond with greater flexibility.

Learning Objectives

After completing this course participants will be able to:

  • List the 3 steps of defusion.
  • Compare and contrast fusion and defusion.
  • Apply techniques to increase awareness of thoughts and responses to thoughts.
  • Apply techniques to help clients assess the effectiveness of responses to thoughts.
  • Apply techniques to help clients increase their response flexibility toward thoughts.
  • Demonstrate how to work with a client who is displaying high fusion levels.


Matthieu Villatte, PhD is an author and clinical trainer living in Seattle, Washington. He was formerly Assistant Professor in clinical psychology at the University of Louisiana.  He obtained his Ph.D. in France, with an emphasis on clinical behavior analysis and relational frame theory, and completed a post-doctoral fellowship at the University of Nevada, Reno under the mentorship of Steve Hayes. Matthieu is an ACBS recognized ACT trainer who has facilitated workshops focusing on clinical applications of RFT in North and South America, Australia, and Europe. He is the co-author of the first ACT manual published in French and is associate editor of the Journal of Contextual Behavior Science.  His new book, Mastering the Clinical Conversation: Language as Intervention, is co-authored by Jennifer Villatte and Steve Hayes and was released by Guilford Press.

Licensing and Continuing Education Requirements

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The Evidence-Based Practice Institute is approved by the American Psychological Association to offer continuing education for psychologists. The Evidence-Based Practice Institute maintains responsibility for the program and its content.  The Evidence-Based Practice Institute allocates 1 CE credit for this course following APA guidelines. After you successfully complete the course, fill out an evaluation form, and pass an exam, your CE certificate will be emailed to you.

Licensing and continuing education requirements vary by state. Please contact your state's regulatory authority to verify that this course meets your licensing and/or continuing education requirements.