Understanding Mentalization
The Capacity to Understand Minds
Mentalization is the imaginative mental activity that enables us to perceive and interpret human behavior in terms of intentional mental states — our needs, desires, feelings, beliefs, goals, and reasons.
What is Mentalization?
Mentalization refers to our ability to understand our own behavior and the behavior of others in terms of underlying mental states — thoughts, feelings, wishes, desires, and intentions. It is a fundamentally human capacity that develops through our earliest relationships and continues to evolve throughout our lives.
When mentalizing breaks down — as it often does under stress, in the context of trauma, or within personality disorders — we may misinterpret others' intentions, react impulsively, or struggle to understand our own emotional experiences.
"Mentalization is the imaginative mental activity that enables us to perceive and interpret human behavior in terms of intentional mental states."
— Fonagy & Bateman
When It Falls Apart
Why Mentalizing Breaks Down
Mentalizing does not disappear because you are weak. It disappears because your nervous system is trying to protect you.
Under stress, the mind prioritizes speed over accuracy. We move from emotion to conclusion, then treat the conclusion as truth. That is when we mind-read, assume intention, and lose the capacity to hold more than one possible story.
The capacity to understand minds is fundamentally human.
Hear From Kyle
An Introduction to MBT
Watch an introduction to Mentalization-Based Treatment
The Four Dimensions of Mentalizing
Mentalization operates across multiple dimensions simultaneously.
Click each dimension to explore what it means in practice.
Mentalization-Based Treatment (MBT)
An evidence-based approach developed by Peter Fonagy and Anthony Bateman, originally for Borderline Personality Disorder, now adapted for a wide range of clinical presentations.
Key Principles
Curiosity over certainty
In MBT, the therapist maintains a stance of genuine curiosity rather than assuming they understand what a client is thinking or feeling. This 'not-knowing' stance invites exploration and signals to the client that their inner world is complex, worthy of investigation, and not something to be reduced to simple explanations. It is the opposite of the certainty that often characterizes non-mentalizing modes.
In Practice
Kyle frequently uses open-ended inquiry and gentle challenges to help clients examine their assumptions about themselves and others, creating space for new understanding to emerge.
Who Can Benefit from MBT?
Personality Disorders
MBT was originally developed for Borderline Personality Disorder and remains one of the most evidence-based treatments available. It helps individuals understand the intense emotions, unstable relationships, and identity disturbances characteristic of personality disorders by rebuilding the capacity to mentalize under stress.
Learn more about Individual Therapy→Self-Harm & Suicidal Ideation
Kyle has published extensively on MBT for suicidal and self-injurious youth. MBT addresses the mentalizing failures that often precede self-harm — moments when emotional pain becomes unbearable and the capacity to reflect on one's own experience collapses.
Learn more about Child & Adolescent Therapy→Depression & Anxiety
Depression and anxiety often involve characteristic mentalizing difficulties: rumination, catastrophizing, and difficulty accessing the perspectives of others. MBT helps clients recognize these patterns and develop more balanced, flexible ways of understanding their experience.
Learn more about Individual Therapy→Interpersonal Difficulties
At its core, mentalizing is a relational capacity. When we struggle to understand others' intentions, misread social cues, or react defensively in relationships, these are mentalizing difficulties. MBT directly addresses these patterns by helping clients develop curiosity about others' inner worlds.
Learn more about Relationship Therapy→Emotion Regulation
The ability to regulate emotions depends on the ability to mentalize them — to recognize what we are feeling, understand why, and respond thoughtfully rather than reactively. MBT builds this capacity from the ground up.
Learn more about Individual Therapy→Trauma-Related Issues
Trauma disrupts mentalizing capacity, often leaving individuals in non-mentalizing modes: psychic equivalence (feelings equal reality), pretend mode (disconnection from emotional truth), or teleological thinking (only actions count). MBT provides a framework for gradually restoring reflective capacity.
Learn more about Individual Therapy→Adolescent Mental Health
Kyle is certified in MBT for children and adolescents — a specialized adaptation that addresses the unique developmental challenges young people face. Adolescence is a critical period for mentalizing development, and MBT-A provides age-appropriate interventions.
Learn more about Child & Adolescent Therapy→Family System Challenges
When mentalizing breaks down within a family system, patterns of misunderstanding, blame, and emotional reactivity can become entrenched. MBT for families helps each member develop curiosity about others' perspectives. Kyle's AMBIT training is particularly relevant for complex multi-provider family situations.
Learn more about Family Therapy→Beyond Individual Therapy
AMBIT: Adaptive Mentalization-Based Integrative Treatment
AMBIT extends mentalization principles beyond the therapy room into the complex reality of multi-provider care. Developed by the Anna Freud National Centre for Children and Families, AMBIT provides a framework for professionals working with young people and families whose needs span multiple agencies and services.
In complex cases, fragmented care can become part of the problem — when providers work in silos, the young person or family may experience inconsistent messaging, competing priorities, and a lack of coherent support. AMBIT addresses this by helping the network around the client mentalize more effectively — not just the client themselves, but the professionals involved in their care.
Kyle's AMBIT training allows him to work not only with individual clients but also to support and consult with treatment teams, schools, and multi-agency networks to create more coordinated, mentalization-informed care. This systems-level perspective is especially valuable for adolescents and families navigating multiple touchpoints across mental health, education, and social services.
Core AMBIT Pillars
-
Direct Work
Mentalization-informed therapeutic engagement with the client, grounded in the relationship between worker and young person.
-
Mentalizing the System
Supporting the professional network to communicate, coordinate, and understand each other's perspectives — reducing fragmentation in care.
-
Learning at Work
Building a culture of reflective practice — learning from outcomes, adapting approaches, and maintaining curiosity even when the work is difficult.
-
Hard-to-Reach Populations
Designed specifically for young people and families who have disengaged from traditional services — meeting them where they are.
Published Research
Research & Publications
Publications
Presentations
Conditions Treated
Strengthening Reflective Capacity: A Practical Guide to Mentalization-Based Treatment
September 2025
A Closer Look at Perceived Rejection: The Impact of Impaired Mentalizing in Gender-Diverse Youth
June 2023
Enhancing Affective and Reflective Functioning of LGBTQIA+ Youth
May 2022
Therapeutically Enhancing Masculinity: Approaching Men Through a Positive Lens of Masculine Traits
April 2022
The Benefits of Mentalizing in The LGBTQIA+ Community
October 2021
Gender Dysphoria and Mentalization Based Treatment
May 2021
Fundamentals in Mentalization-Based Treatment for Suicidal and Self-Injurious Youth
October 2019
with Laurel L. Williams, Carl Fleisher, Chris Grimes
Basic Concepts in Mentalizing Therapy With Adolescents With Emerging Personality Disorders and Self-Harming Behaviors
October 2018
with Laurel L. Williams, Owen S. Muir, Efrain Bleiberg, Carl Fleisher
Fundamentals in Mentalization-Based Treatment for Suicidal and Self-Injurious Youth
October 2018
with Laurel L. Williams, Carlene Macmillan, Carl Fleisher
Experience MBT Firsthand
Whether you're a prospective patient, a clinician interested in MBT supervision, or an organization seeking training, Kyle can help you explore how mentalization-based approaches can make a difference.
Go Deeper
Continue Your Learning
Kyle's books and workbooks offer practical, research-grounded tools for understanding and strengthening your capacity to mentalize.
From foundational concepts to advanced clinical applications, these resources bring mentalization-based treatment into your hands.
Browse Resources