How Psychological Flexibility Can Support Psychedelic-Assisted Therapy
As psychedelic-assisted therapy continues to develop, researchers and clinicians are working to understand not just whether it works, but how it works. What processes help people experience lasting change after a psychedelic session?
A paper titled The Use of the Psychological Flexibility Model to Support Psychedelic-Assisted Therapy offers a compelling answer. The article includes Jason Luoma, PhD, and Brian Pilecki, PhD, from Portland Psychotherapy as authors. It explores how the psychological flexibility model, the foundation of Acceptance and Commitment Therapy (ACT), may provide a useful framework for understanding and guiding psychedelic-assisted therapy.
What Is Psychological Flexibility?
Psychological flexibility refers to the ability to stay present with thoughts and feelings, even when they are uncomfortable, and to act in ways that align with one’s values.
It involves six interrelated processes:
Acceptance
Cognitive defusion
Present-moment awareness
Self-as-context
Values clarification
Committed action
When people become psychologically inflexible, they tend to avoid painful emotions, get entangled with self-critical thoughts, and drift away from meaningful action. This rigidity is linked to many forms of psychological distress, including depression, anxiety, trauma, and substance use (Kashdan & Rottenberg, 2010).
ACT aims to increase flexibility. Luoma and colleagues argue that psychedelic-assisted therapy may produce similar shifts — sometimes more rapidly than traditional therapy alone, though research on these mechanisms is still developing.
How Psychedelic Experiences Map to the Six ACT Processes
Psychedelic experiences often involve intensified emotions, altered perceptions of self, and a temporary loosening of rigid cognitive patterns. From a psychological flexibility perspective, this may create unique therapeutic opportunities.
For example:
1. Acceptance
During psychedelic sessions, people frequently encounter strong emotions, including fear, grief, or shame. Therapeutic guidance encourages people to turn toward these experiences rather than avoid them. This mirrors ACT’s emphasis on openness to internal experiences.
2. Cognitive Defusion
Psychedelics can disrupt habitual thought patterns. People may experience thoughts as passing events rather than literal truths. Long-standing beliefs such as “I am broken” or “I am unlovable” may feel less fixed and more workable.
3. Self-as-Context
Many people report experiences of observing their thoughts and emotions from a broader perspective. Some describe a sense of expanded awareness or connection beyond their usual identity. In ACT terms, this aligns with self-as-context, the ability to notice experiences without being defined by them.
4. Values and Meaning
Psychedelic experiences often bring clarity about what matters most. People may reconnect with relationships, creativity, service, or personal growth. This renewed sense of values can motivate committed action after the session.
What This Means for Preparation, Sessions, and Integration
Psychedelic-assisted therapy is not simply about the pharmacological effects of a substance. Outcomes depend heavily on preparation, therapeutic support during the session, and integration afterward.
The psychological flexibility model offers clinicians a coherent framework for structuring these phases.
Preparation can focus on building openness, clarifying values, and strengthening skills for staying present with difficult material.
During the session, therapists can gently guide people toward acceptance and willingness rather than avoidance.
Integration can center on translating insights into committed action aligned with values.
Rather than viewing psychedelic experiences as mysterious or purely neurobiological events, this model anchors them in well-established psychological processes.
Bridging Research and Practice
One strength of the psychological flexibility model is its strong research base. Psychological flexibility has been shown to predict outcomes across many conditions. If psychedelic-assisted therapy enhances flexibility, that provides a measurable and testable mechanism of change.
This approach also helps move the field toward process-based therapy. Instead of focusing only on symptom reduction, clinicians can assess whether flexibility, self-compassion, and values-driven behavior are increasing over time.
By integrating ACT principles with psychedelic-assisted therapy, researchers and clinicians may be able to design more intentional, structured, and ethically grounded interventions.
A Framework for Responsible Growth
As interest in psychedelic therapy grows, there is a risk of overemphasizing the substances themselves. This paper reminds us that sustainable change depends on psychological processes, therapeutic relationships, and integration into daily life.
The psychological flexibility model offers a grounded, evidence-informed way to understand and guide this work. It connects psychedelic-assisted therapy to decades of behavioral science while preserving space for the profound experiences people often report.
As psychedelic-assisted therapy continues to mature, frameworks like this can help anchor it in decades of behavioral science — keeping the field theory-driven, measurable, and accountable to the clinicians and clients it’s meant to serve.
You can find the full article here.
This article is for educational purposes and does not constitute medical advice or a recommendation to use psychedelic substances. Psychedelic-assisted therapy is currently available primarily through approved clinical trials and regulated programs such as Oregon’s psilocybin services.