Dissociation

Body of Knowledge of Psychotraumatology

Adaptations of Trauma

Traumatic stress reactions are increasingly understood as adaptive responses to abnormal threat, rather than arbitrary “symptoms.” In the face of overwhelming events, the brain and body employ survival-based coping mechanisms that allow the individual to endure and function (Van der Kolk, 2014). These adaptations occur on multiple levels – neurobiological, behavioral, and physiological – and

Body of Knowledge of Psychotraumatology

ANS Regulation Theory: Understanding Trauma Responses

Babette Rothschild, a prominent psychotherapist and trauma specialist, provides a detailed understanding of trauma through her theory of Autonomic Nervous System (ANS) Regulation (Rothschild, 2000, 2017). Rothschild’s work emphasizes how trauma profoundly affects the autonomic nervous system, influencing individuals' physiological reactions and emotional experiences. Autonomic Nervous System and Trauma Rothschild's model builds on the foundation

Body of Knowledge of Psychotraumatology

Attachment Styles and Their Relationship to Trauma

Attachment theory identifies four primary attachment styles—secure, anxious-preoccupied, dismissive-avoidant, and disorganized (also referred to as fearful-avoidant)—each reflecting distinct ways in which individuals relate emotionally and behaviorally to caregivers and later significant others (Ainsworth & Bowlby, 1991). Secure Attachment Individuals with a secure attachment style tend to exhibit comfort with both intimacy and autonomy. They generally maintain

Body of Knowledge of Psychotraumatology

Attachment Theory and Trauma

Attachment theory, initially developed by John Bowlby, has evolved to incorporate neurobiological findings and to illuminate the impact of early relational trauma on development. A secure attachment in infancy (formed through consistent, attuned caregiving) is now understood as a primary protector against the harmful effects of stress (Schore, 2001). By contrast, trauma in the context

Body of Knowledge of Psychotraumatology

Dysregulation as a Core Mechanism

A common thread woven throughout trauma-related disorders is the phenomenon of dysregulation—the impairment in managing emotional and physiological states. Contemporary trauma theorists now widely regard dysregulation of arousal and affect as central to understanding the persistence of trauma symptoms (Van der Kolk, 2014). Individuals who have experienced trauma often struggle to maintain emotional stability, fluctuating

Body of Knowledge of Psychotraumatology

How the Body Keeps the Score and Neuroscience of Trauma in the Body

The influential work of Bessel van der Kolk (2014) has profoundly shaped contemporary trauma theory by articulating the deep neurobiological and somatic imprints trauma leaves on the body. Van der Kolk emphasizes that traumatic experiences are not merely psychological events but profoundly embodied phenomena, reflected and stored throughout the nervous and somatic systems long after

Body of Knowledge of Psychotraumatology

Interpersonal Neurobiology

Interpersonal Neurobiology (IPNB), developed and popularized by psychiatrist Daniel J. Siegel, is an interdisciplinary framework that seeks to understand human experience through the interactions between biology, psychology, and interpersonal relationships (Siegel, 1999, 2012). Central to IPNB is the principle that human well-being emerges from integration—the process by which separate elements of the mind and brain

Body of Knowledge of Psychotraumatology

Parts Theory, Ego-State Theory, and Structural Dissociation: Differences, Overlaps, and Clinical Implications for Trauma

Theories emphasizing multiplicity within the personality, such as Parts Theory (Internal Family Systems - IFS), Ego-State Theory, and the Theory of Structural Dissociation, have significantly enriched contemporary trauma treatment by acknowledging internal fragmentation and promoting integration as central therapeutic goals (Fisher, 2017; Schwartz, 2021; Van der Hart et al., 2006). Parts Theory (Internal Family Systems)

Body of Knowledge of Psychotraumatology

Polyvagal Theory

Polyvagal Theory, developed by neuroscientist Stephen Porges, has significantly transformed contemporary understandings of trauma, emphasizing the critical role of the autonomic nervous system in trauma responses and healing (Porges, 2011). At its core, Polyvagal Theory provides a biological framework for understanding safety, danger, and life-threatening states, fundamentally reshaping how clinicians conceptualize and address trauma. Foundations

Body of Knowledge of Psychotraumatology

The Adaptive Information Processing (AIP) Model: The pathogenic Memory

Definition of AIP The Adaptive Information Processing (AIP) Model, formulated by Francine Shapiro, serves as the foundational theoretical framework for EMDR therapy (Shapiro, 2018). It posits that the human brain possesses an innate physiological system designed to process experiences and integrate them adaptively, much like how the body heals physical injuries (Shapiro, 2007; Rydberg et

Body of Knowledge of Psychotraumatology

Theory of Structural Dissociation and Trauma-Related Dissociation

The Theory of Structural Dissociation, developed by Onno van der Hart, Ellert Nijenhuis, and Kathy Steele (2006), provides a comprehensive framework for understanding dissociation as a fundamental consequence of trauma. This theory offers a detailed conceptualization of how traumatic experiences, particularly chronic or developmental trauma, fragment an individual's personality into distinct psychological structures or parts,

Body of Knowledge of Psychotraumatology

Understanding the Window of Tolerance in Trauma Theory

The Window of Tolerance, a concept developed by psychiatrist Dan Siegel (1999), describes the optimal emotional zone within which an individual can effectively manage life's ups and downs. Within this "window," a person experiences emotions at a level that feels manageable—they are neither overwhelmed nor numbed out. This state allows individuals to remain connected, regulated,

Evidence-Based Trauma Therapies and Models

Deep Brain Reorienting (DBR)

Deep Brain Reorienting (DBR), developed by psychiatrist Frank Corrigan, is a specialized trauma therapy explicitly designed to address deep-seated trauma impacts at the subcortical, neurophysiological level. DBR is particularly suitable for trauma marked by intense emotional and somatic dysregulation, chronic dissociation, and unresolved survival-based responses. Foundational Principles DBR is grounded in trauma neuroscience, specifically targeting

Evidence-Based Trauma Therapies and Models

Eye Movement Desensitization and Reprocessing (EMDR)

Eye Movement Desensitization and Reprocessing (EMDR) therapy, originally developed by Francine Shapiro in the late 1980s, is a structured, integrative psychotherapeutic approach specifically designed to alleviate distress associated with traumatic memories. EMDR uniquely integrates cognitive, emotional, somatic, and neurological components, employing bilateral stimulation—most commonly eye movements—to facilitate the reprocessing of traumatic memories. Foundational Principles of

Evidence-Based Trauma Therapies and Models

Finding Solid Ground – Stabilization Program for Trauma-Related Dissociation

Overview Finding Solid Ground is a structured, psychoeducational stabilization program specifically designed for individuals with trauma-related dissociation. Developed by Dr. Bethany Brand, Dr. Ruth Lanius, and other experts in dissociation, it provides a step-by-step, skills-based framework that can be delivered in group or individual formats. Its goal is to help clients strengthen safety, self-regulation, and

Evidence-Based Trauma Therapies and Models

Internal Family Systems (IFS) Therapy

Internal Family Systems (IFS) therapy, developed by Richard Schwartz in the 1980s, has emerged as a highly effective and innovative approach for treating complex trauma and related psychological disorders. IFS conceptualizes the psyche as comprising distinct internal "parts," each embodying unique roles, emotions, and beliefs that are formed through developmental experiences, particularly those involving trauma.

Evidence-Based Trauma Therapies and Models

Neurofeedback and Biofeedback

Neurofeedback and biofeedback are physiologically targeted interventions that train regulation of the nervous system by providing real-time feedback on brain or body signals. In psychotraumatology, they are used to restore autonomic flexibility, dampen hyperarousal, reduce dissociation, and improve attention/affect regulation—capacities often eroded by trauma. Foundational principles Operant conditioning of physiology: clients learn to increase desirable

Evidence-Based Trauma Therapies and Models

Polyvagal Theory–Informed Therapies

Polyvagal Theory–Informed Therapies (PVTT) are trauma treatment approaches based on the polyvagal theory developed by Stephen Porges (2011, 2017). They integrate an understanding of the autonomic nervous system’s hierarchical responses to threat and safety into therapeutic interventions, aiming to restore nervous system flexibility, emotional regulation, and a sense of safety. Foundational Principles Polyvagal theory posits

Evidence-Based Trauma Therapies and Models

Psychodrama for Trauma (Moreno), PBSP Psychomotor (Albert Pesso), and Contemporary Uses (van der Kolk)

Overview Psychodrama and PBSP (Pesso Boyden System Psychomotor) are experiential, enactment-based therapies that use role play, embodied movement, and structured scenes to repair attachment ruptures, rework traumatic memories, and restore agency. Bessel van der Kolk has highlighted these modalities—especially PBSP “structures”—as powerful for trauma integration when cognitive talk therapy stalls. Foundational principles Action + Embodiment:

Evidence-Based Trauma Therapies and Models

Somatic and Sensorimotor Psychotherapy

Somatic and Sensorimotor Psychotherapies represent trauma-informed approaches explicitly designed to engage and resolve trauma at the bodily level. These methodologies integrate principles of neuroscience, trauma theory, and somatic psychology to address physiological symptoms and somatic memory of trauma effectively. Foundational Principles Somatic psychotherapies view trauma as fundamentally embedded within the nervous system and body tissues,

Evidence-Based Trauma Therapies and Models

Trauma-Informed Stabilization Treatment (TIST)

Overview Trauma-Informed Stabilization Treatment (TIST), developed by Dr. Janina Fisher, is a phase-oriented, parts-based model designed for individuals with complex trauma, dissociation, and self-destructive behaviors. TIST blends structural dissociation theory, sensorimotor psychotherapy, and mindfulness into a practical, safety-first approach that helps clients develop internal stability before direct trauma processing. Foundational Principles Parts Work as Stabilization:

History of Psychotraumatology

History and Conceptual Development of Psychotraumatology

Early Foundations: Trauma as an “Unconscious” Phenomenon (Charcot, Janet, Freud) Modern Psychotraumatology has its roots in late 19th-century clinical observations of hysteria and psychological shock. In the 1880s, Jean-Martin Charcot and his student Pierre Janet in France were among the first to investigate how traumatic experiences could lead to psychological symptoms systematically. Charcot observed “traumatic

History of Psychotraumatology

The Emergence of PTSD: From Post-Vietnam Syndrome to DSM Recognition

In 1980, the American Psychiatric Association formally recognized Post-Traumatic Stress Disorder (PTSD) as a psychiatric diagnosis in the third edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-III). This landmark shift legitimized trauma as a cause of persistent mental health symptoms (American Psychiatric Association [APA], 1980). This inclusion was driven by multidisciplinary research

History of Psychotraumatology

Trauma as a Discrete External Event: War Neuroses and the Rise of PTSD

In the early-to-mid-20th century, the prevailing view of trauma shifted toward seeing it as a response to discrete external events, particularly the horrors of war and other large-scale catastrophes. While psychoanalysts during the interwar period gave limited attention to real-life trauma, military psychiatrists observed acute psychological breakdowns among soldiers that could not be ignored. World

Neurobiology of Trauma

Applying Neurobiology Principles to Trauma Treatment

Rationale for Neurobiologically-Informed Therapy Understanding trauma as a neurobiological condition offers profound implications for therapeutic practice. First, it allows clinicians to reframe trauma-related symptoms not as signs of character pathology or weakness, but as predictable consequences of disrupted brain-body systems (van der Kolk, 2014). This reframing is inherently validating: survivors can begin to understand that

Neurobiology of Trauma

Autonomic Nervous System and Polyvagal Theory

Another crucial physiological component in trauma is the autonomic nervous system (ANS), which governs involuntary bodily functions and modulates states of arousal and rest. The ANS is divided into two primary branches: the sympathetic nervous system (associated with fight-or-flight responses) and the parasympathetic nervous system (linked to rest, digestion, and repair). Trauma causes profound dysregulation

Neurobiology of Trauma

Neurobiological Imprints of Trauma

Decades of research in psychotraumatology and neuroscience have mapped out how traumatic experiences alter key brain regions and physiological pathways. Researchers have long observed that trauma is “stored in somatic memory and expressed as changes in the biological stress response” (van der Kolk, 1994, p. 253). Intense emotional trauma triggers a cascade of neurochemical and

Neurobiology of Trauma

Neurobiological Profiles: PTSD vs. Complex Trauma

Post-Traumatic Stress Disorder (PTSD) – Single-Event Trauma Response PTSD, typically associated with exposure to a single traumatic incident, presents a relatively consistent neurobiological profile. Neuroimaging studies indicate that individuals with PTSD exhibit heightened amygdala activation, reduced hippocampal volume, and diminished activity in the medial prefrontal cortex (mPFC)—regions essential for emotional regulation and contextual memory (Rauch

Neurobiology of Trauma

Sympathetic Nervous System & Catecholamines

Trauma acutely activates the sympathetic nervous system, which is responsible for the body’s immediate fight-flight-freeze response. This system rapidly mobilizes survival energy through the release of catecholamines, primarily adrenaline (epinephrine) and norepinephrine (NE). These neurochemicals increase heart rate, dilate pupils, redirect blood flow to muscles, and sharpen sensory input—preparing the organism to react to danger

The Triphasic Model for Treating Trauma

Phase One: Safety and Stabilization

Safety and stabilization constitute the essential first phase of trauma recovery, fundamentally shaping the effectiveness of all subsequent therapeutic interventions. Given trauma’s inherent nature—characterized by chaos, overwhelm, loss of control, and feelings of unsafety—establishing a secure foundation is a non-negotiable prerequisite for successful healing (Herman, 1992; Courtois & Ford, 2013). Primary Objectives: Establishing Physical, Emotional,

The Triphasic Model for Treating Trauma

Phase Three: Integration and Rehabilitation

After trauma memories have been safely processed and adaptively restructured, clients enter the Integration and Rehabilitation phase. This stage is crucial for translating therapeutic gains into sustainable changes, personal growth, and meaningful reintegration into daily life. 1. Integration of Processed Traumatic Experiences Core Objectives: Facilitate a coherent narrative that integrates traumatic experiences into a person's

The Triphasic Model for Treating Trauma

Phase Two: Trauma Memory Processing

Once stable safety, emotional regulation, and therapeutic trust have been firmly established, the patient moves into the second phase of trauma recovery: trauma memory processing. This phase involves safely accessing, processing, and integrating traumatic memories to reduce their emotional intensity and cognitive fragmentation, ultimately promoting healing, coherence, and resolution (Herman, 1992; Courtois & Ford, 2013).

Trauma

Acute Trauma

Definition and Examples Acute trauma refers to distressing psychological experiences triggered by a single, clearly definable event that overwhelms an individual's coping capacity and disrupts their sense of safety and predictability. Typically, acute traumatic events occur unexpectedly, are limited in duration, and carry a high emotional intensity at the moment of occurrence (Shapiro, 2018; Van

Trauma

Complex Trauma (Complex PTSD)

Definition and Core Criteria: Chronic, Relational, and Developmental Aspects Complex trauma, commonly referred to as Complex Post-Traumatic Stress Disorder (Complex PTSD or C-PTSD), describes the pervasive and prolonged psychological consequences resulting from chronic, interpersonal, and often early-life traumatic experiences. Unlike single-event trauma, complex trauma typically involves ongoing situations characterized by relational betrayal, emotional and physical

Trauma

Developmental Trauma

Trauma Experienced During Key Developmental Stages (Childhood Neglect, Emotional or Physical Abuse) Developmental trauma encompasses prolonged, repeated, or severe traumatic experiences occurring during critical early developmental periods—particularly in infancy, childhood, or adolescence. Unlike single-event trauma, developmental trauma is inherently interpersonal, typically involving caregivers or other trusted individuals who are responsible for nurturing, safety, and emotional

Trauma

Existential-Religious Trauma

(Moral Injury, Transcendent, Existential, Religious Trauma, and Abuse of Consciousness) Definition and Core Concepts Existential-spiritual trauma encompasses psychological, emotional, spiritual, and relational wounds arising from experiences that profoundly disrupt an individual's core beliefs, ethical foundations, spiritual identity, or sense of existential meaning. This integrated trauma category includes previously distinct yet related concepts: Moral Injury: Psychological

Trauma

Intergenerational (Transgenerational) Trauma

Mechanisms of Trauma Transmission Across Generations Intergenerational trauma, also termed transgenerational trauma, describes how the psychological impacts of traumatic events are transmitted from one generation to another. Rather than experiencing the trauma firsthand, subsequent generations inherit the trauma's psychological, emotional, and physiological consequences through indirect but consequential mechanisms (Yehuda & Lehrner, 2018). Key mechanisms of

Trauma

Intrauterine & Pre‑Verbal Trauma

Defining the Concept Intrauterine trauma refers to stressors experienced prenatally—such as maternal stress, emotional distress, substance exposure, or prenatal medical complications—that can affect fetal development. Pre‑verbal trauma occurs before the acquisition of language, including birth trauma, early neglect, or abuse, which profoundly impacts implicit memory systems. Both operate outside conscious awareness and are carried in

Trauma

Overview of Trauma Types

Trauma, by its very nature, profoundly alters individuals’ psychological, emotional, physiological, relational, and even existential landscapes. Though all traumatic experiences share certain defining qualities—such as overwhelming the individual’s coping resources and shattering basic assumptions about safety and control—each trauma category also carries distinct impacts and considerations essential for tailored, effective treatment (Herman, 1992; Courtois &

Trauma

Post-Traumatic Stress Disorder (PTSD)

Definition and Examples (Single-Event) Post-Traumatic Stress Disorder (PTSD) is a clinical syndrome characterized by persistent emotional distress, intrusive symptoms, avoidance behaviors, and heightened physiological arousal, occurring after experiencing or witnessing a severely distressing or life-threatening event (American Psychiatric Association [APA], 2013). Typically associated with single, clearly identifiable traumatic incidents, PTSD commonly arises from situations such