Resources

Sources cited in the guides, including clinical guidelines, reviews, and research papers.

Clinical Guidelines

Diagnosis and Presentation

Research on dissociation, memory, identity states, and differential diagnosis.

The Diagnosis of Multiple Personality Disorder Based on Subtle Dissociative Signs

Clinical paper on subtle and indirect dissociative signs when DID is concealed rather than visibly dramatic.

Clinical ReferenceExpert ConsensusAbstract OnlyDIDAssessmentCovert presentationDissociation
Dissociative Identity Disorder: Out of the Shadows at Last?

Editorial overview of why DID is under-recognized, including diagnostic delay and prior diagnoses.

Clinical ReferenceExpert ConsensusOpen AccessDIDMisdiagnosisAssessmentDiagnostic delay
Dissociation Debates: Everything You Know Is Wrong

A peer-reviewed review of the history, classification, evidence, and controversies surrounding dissociation.

Clinical ReferenceEducational ReferenceOpen AccessDIDHistoryDiagnostic classification
What Are Dissociative Parts and How or When to Introduce 'Parts' Language?

A clinical discussion of dissociative parts, ego states, and the careful use of parts language in therapy.

Clinical ReferenceExpert ConsensusOpen AccessDIDDissociative partsEgo states
The SCID-D Interview: Dissociation Assessment in Therapy, Forensics, and Research

The current clinician-administered SCID-D interview and its five-component model for assessing dissociation.

Clinical ReferenceEducational ReferencePaid Or BorrowedDIDAssessmentSCID-D
The Multidimensional Inventory of Dissociation (MID): A Comprehensive Measure of Pathological Dissociation

Development and validation paper for the 218-item Multidimensional Inventory of Dissociation, a self-report measure for detailed assessment of pathological dissociation.

Research StudyObservational StudyOpen AccessDIDAssessmentMIDDissociation
A New Model of Dissociative Identity Disorder

Dell's subjective/phenomenological model of DID and its proposed three-part diagnostic framework.

Research StudyObservational StudyOpen AccessDIDAssessmentMIDDiagnostic model
The Multidimensional Inventory of Dissociation (MID)

Official MID information covering clinician administration, client self-report completion, telehealth directions, versions, and interpretation materials.

Clinical ReferenceEducational ReferenceOpen AccessDIDAssessmentMIDSelf-report
ICD-11 Dissociative Disorders

Diagnostic framework for dissociative disorders and related categories.

Clinical ReferenceEducational ReferenceOpen AccessDissociationDiagnosisICD-11
Dissociative Identity Disorder (6B64)

ICD-11 entry for dissociative identity disorder and the 6B64 code.

Clinical ReferenceEducational ReferenceOpen AccessDIDICD-11Diagnosis
Other Specified Dissociative Disorder (6B6Y)

ICD-11 category for other dissociative presentations with clinically significant distress or impairment.

Clinical ReferenceEducational ReferenceOpen AccessOSDDICD-11Diagnosis
Partial Dissociative Identity Disorder (6B65)

ICD-11 entry for partial DID, where one dominant identity state usually handles daily life while non-dominant states intrude and take control infrequently.

Clinical ReferenceEducational ReferenceOpen AccessPartial DIDICD-11Diagnosis
Unspecified Dissociative Disorder (6B6Z)

ICD-11 unspecified dissociative disorder category for cases where a more specific diagnosis is not established.

Clinical ReferenceEducational ReferenceOpen AccessUnspecified dissociative disorderICD-11Diagnosis
Fact Sheet IV – What Are the Dissociative Disorders?

Diagnostic overview of DID, OSDD, partial DID, and related dissociative categories.

Clinical ReferenceEducational ReferenceOpen AccessDIDOSDDDiagnostic criteriaClinical overview
Partial DID or OSDD: Classifying and Diagnosing Types of Dissociation

A clinical explainer on key distinctions between DID, OSDD, and partial DID with timing-linked guidance.

Clinical ReferenceExpert ConsensusOpen AccessDIDOSDDPartial DIDDiagnostic differentiation
An Introductory Guide to Assessing Dissociative Identity Disorder (DID)

An experienced dissociation clinician's introductory assessment questions and training guidance.

Clinical ReferenceExpert ConsensusOpen AccessDIDAssessmentClinical practice
Dissociative Identity Disorder: Differential Diagnoses

A clinician-authored overview of conditions considered when evaluating possible DID.

Clinical ReferenceEducational ReferenceOpen AccessDIDAssessmentDifferential diagnosis
Other Disorders: Trauma-related Disorders and Misdiagnosis

An educational comparison of DID with frequently confused and co-occurring diagnoses, with references to diagnostic and clinical guidance.

Clinical ReferenceEducational ReferenceOpen AccessDIDMisdiagnosisDifferential diagnosis
Fact or Factitious? A Psychobiological Study of Authentic and Simulated Dissociative Identity States

A comparison of diagnosed DID identity states and simulated identity states.

Research StudyObservational StudyOpen AccessDIDNeurobiologySimulation
Revisiting False-Positive and Imitated Dissociative Identity Disorder

Clinical research on careful differential assessment and false-positive presentations.

Research StudyObservational StudyOpen AccessDIDAssessmentDifferential diagnosis
Trauma-Related Structural Dissociation of the Personality

Clinical-theoretical account of structural dissociation, including apparently normal parts, emotional parts, and trauma-related avoidance.

Clinical ReferenceExpert ConsensusOpen AccessDissociationStructural dissociationTraumaTheory
Understanding, Identifying and Managing Severe Dissociative Disorders in General Psychiatric Settings

Clinical review of dissociative disorders, assessment, structural dissociation theory, and specialist treatment considerations.

Clinical ReferenceEducational ReferenceOpen AccessDIDAssessmentStructural dissociationTreatment
Identity State-Dependent Self-Relevance and Emotional Intensity Ratings of Words in Dissociative Identity Disorder

Controlled longitudinal study of self-relevance and emotional-intensity ratings across neutral and trauma-related identity states in DID.

Research StudyObservational StudyOpen AccessDIDIdentity statesEmotionSelf-relevance
The Truth About Narcissism and Trauma

Clinical video discussing trauma as psychological injury rather than a simple checklist of events; it addresses personality disorders.

Clinical ReferenceEducational ReferenceOpen AccessTraumaDevelopmentClinical commentary
Revisiting the Etiological Aspects of Dissociative Identity Disorder: A Biopsychosocial Perspective

A review of developmental, sociocultural, cognitive, and neurobiological factors in DID.

Clinical ReferenceEducational ReferenceOpen AccessDIDDevelopmentAssessment
The Dissociation Theory of Pierre Janet

Historical account of Janet's theory of dissociation, trauma, memory, and psychological integration.

Research StudyEducational ReferenceAbstract OnlyPierre JanetDissociationHistory
A Crisis of Masculinity? Re-writing the History of Shell-shock and Gender in First World War Britain

Historical review of shell shock, gender, masculinity, and the varied social contexts of war trauma.

Research StudyEducational ReferenceAbstract OnlyShell shockWar traumaGender
Dissociative Identity Disorder: A Review of the Diagnosis That Divides

Clinical review of DID's diagnostic history, current classification, controversy, and treatment considerations.

Research StudyEducational ReferenceAbstract OnlyDIDDiagnostic historyDSM
Dissociative Identity Disorder: An Empirical Overview

Review of DID-specific empirical research, including study limitations and ongoing controversies.

Systematic ReviewSystematic ReviewOpen AccessDIDResearch reviewControversy
Childhood Trauma in Patients With Dissociative Identity Disorder: A Systematic Review of Data From 1990 to 2022

Systematic review of reported childhood trauma in DID and related dissociative-disorder groups, including its limited eight-study evidence base.

Systematic ReviewSystematic ReviewAbstract OnlyDIDChildhood traumaSystematic review
Predicting a Dissociative Disorder From Type of Childhood Maltreatment and Abuser-Abused Relational Tie

Psychiatric inpatient study of maltreatment type, relational context, and dissociative-disorder diagnoses.

Research StudyObservational StudyAbstract OnlyDissociative disordersChildhood maltreatmentNeglect
Developmental Pathways to Dissociation

A clinician's review of prospective research on attachment, caregiver availability, and later dissociation.

Clinical ReferenceEducational ReferenceOpen AccessDissociationAttachmentEarly caregiving
Quality of Early Care and Childhood Trauma: A Prospective Study of Developmental Pathways to Dissociation

A prospective study relating observed infant caregiving, childhood trauma measures, and dissociative symptoms at age 19.

Research StudyObservational StudyOpen AccessDissociationAttachmentLongitudinal research
Functional Neuroimaging in Dissociative Disorders: A Systematic Review

A systematic review of functional-neuroimaging studies across dissociative disorders, including DID.

Systematic ReviewSystematic ReviewOpen AccessDIDNeuroimagingResearch review
Inter-Identity Amnesia in Dissociative Identity Disorder

Experimental research on subjective and objectively measured memory access across identity states.

Research StudyObservational StudyOpen AccessDIDAmnesiaMemory
Clinical Presentations of Multiple Personality Disorder

A clinical review of covert, intermittent, stress-related, and other presentations of the condition now called DID.

Clinical ReferenceExpert ConsensusOpen AccessDIDClinical courseCovert presentation
What Happens to DID Clients After an Earthquake: A Case Series

A post-disaster case series describing symptom changes among 16 clients identified with DID after the 2023 Türkiye earthquakes.

Research StudyObservational StudyOpen AccessDIDStressCase series

Treatment and Outcomes

Studies and clinical writing on treatment methods, progress, and long-term outcomes.

Therapeutic Hazards of Treating Child Alters as Real Children in Dissociative Identity Disorder

A clinical discussion of child-identified states and the risks of reinforcing their literal separateness.

Clinical ReferenceExpert ConsensusAbstract OnlyDIDIdentity statesClinical practice
The Internal Family Systems Model Outline

The IFS model's basic assumptions about parts, subpersonalities, and Self-leadership.

Clinical ReferenceEducational ReferenceOpen AccessInternal Family SystemsParts languagePsychotherapy
Healing the Fragmented Selves of Trauma Survivors: Overcoming Internal Self-Alienation

A clinical treatment book combining parts work, structural dissociation, sensorimotor psychotherapy, mindfulness, and attachment-focused approaches.

BookExpert ConsensusPaid Or BorrowedInternal Family SystemsParts workTrauma treatmentDissociation
Trauma and Dissociation Informed IFS

An IFS-certified dissociation specialist discusses why standard IFS may need changes in pacing, stabilization, and work with identity states.

Clinical ReferenceExpert ConsensusOpen AccessDIDInternal Family SystemsTreatment safety
Exploring the Evidence for Internal Family Systems Therapy: A Scoping Review of Current Research, Gaps, and Future Directions

Scoping review of the peer-reviewed IFS literature, its study designs, clinical applications, and remaining evidence gaps.

Systematic ReviewSystematic ReviewOpen AccessInternal Family SystemsPsychotherapyEvidence review
Dealing With Alters: A Pragmatic Clinical Perspective

Clinical review of working directly with identity states, including the mistake of treating the familiar host as the real person.

Clinical ReferenceExpert ConsensusOpen AccessDIDIdentity statesTreatment
Hypnosis in the Treatment of Dissociative Identity Disorder and Allied States: An Overview and Case Study

A clinical overview and case study describing therapeutic uses of hypnosis, trauma-sensitive precautions, pacing, and memory-related risks in DID treatment.

Clinical ReferenceExpert ConsensusAbstract OnlyDIDHypnosisTreatmentSafety
Effects of Misleading Questions and Hypnotic Memory Suggestion on Memory Reports: A Signal-Detection Analysis

An experiment examining how misleading questions and hypnotic memory suggestions affect memory accuracy and response bias.

Research StudyObservational StudyPaid Or BorrowedHypnosisMemorySuggestibility
The Impact of the Therapeutic Alliance on Treatment Outcome in Patients With Dissociative Disorders

A longitudinal study of patient- and therapist-rated therapeutic alliance and later outcomes in people with DID or DDNOS.

Research StudyObservational StudyOpen AccessDIDTherapeutic allianceTreatment outcomes
Alliance Rupture Repair: A Meta-Analysis

A meta-analysis of the relationship between resolving strains in the therapeutic alliance and psychotherapy outcomes.

Systematic ReviewSystematic ReviewAbstract OnlyPsychotherapyTherapeutic allianceRupture repair
Clinical Consensus Strategies to Repair Ruptures in the Therapeutic Alliance

An expert-consensus study of practical responses to withdrawal, disagreement, and other strains in psychotherapy.

Research StudyExpert ConsensusOpen AccessPsychotherapyTherapeutic allianceMetacommunication
Being Human Under Inhuman Conditions: Meanings of Living With Severe Dissociative States Involving the Experience of Being in Parts

Qualitative analysis of first-person online material about living with severe dissociative states and experiences of psychiatric care.

Research StudyObservational StudyOpen AccessDissociationLived experienceMental health care
Phase-Oriented Treatment of Structural Dissociation in Complex Traumatization: Overcoming Trauma-Related Phobias

Clinical paper on phase-oriented treatment and the theory's account of phobic avoidance of traumatic memories and dissociative parts.

Clinical ReferenceExpert ConsensusAbstract OnlyDissociationStructural dissociationTrauma treatment
Group Treatment for Complex Dissociative Disorders: A Randomized Clinical Trial

A randomized trial of a stabilization-focused group program added to individual treatment.

Research StudyRandomized TrialOpen AccessDissociationStabilizationTreatment trial
Ten-Year Follow-Up Study of Patients With Dissociative Identity Disorder

A small ten-year follow-up examining symptoms and treatment outcomes among people diagnosed with DID.

Research StudyObservational StudyAbstract OnlyDIDRecurrenceLong-term follow-up
Six-Year Follow-Up of the Treatment of Patients With Dissociative Disorders

A naturalistic follow-up of symptoms, functioning, and treatment use over six years.

Research StudyObservational StudyOpen AccessDissociationOutcomesLong-term follow-up
Recent Evidence-Based Developments in the Treatment of DID

A critical review of the limited and developing evidence base for DID treatment.

Clinical ReferenceEducational ReferenceOpen AccessDIDTreatmentEvidence review

Myths and Stigma

Evidence addressing misinformation, simulation, violence, and clinical stigma.

Seeking the Truth About Amnesia for Parts in DID (Dissociative Identity Disorder)

A clinical explainer using the SCID-D to distinguish DID's amnesia criterion from amnesia specifically between identity states.

Clinical ReferenceEducational ReferenceOpen AccessDIDAmnesiaSCID-D
Separating Fact from Fiction: An Empirical Examination of Six Myths About DID

Review of empirical evidence concerning recurring claims about DID.

Clinical ReferenceEducational ReferenceOpen AccessDIDMythsEvidence
Mental Illness and Violent Behavior: The Role of Dissociation

Research examining criminal-justice involvement and stereotypes about dissociative disorders.

Research StudyObservational StudyOpen AccessDissociationViolenceStigma
Petals of a Rose

A short film portraying a day in the life of a woman with DID, created as an alternative to negative film and television portrayals.

Clinical ReferenceEducational ReferenceOpen AccessDIDFilmMedia representation
The Link Between Dissociation and Both Suicide Attempts and Non-Suicidal Self-Injury: Meta-Analyses

Meta-analyses examining suicide attempts and non-suicidal self-injury among psychiatric patients with dissociative disorders and dissociative symptoms.

Systematic ReviewSystematic ReviewAbstract OnlyDissociationSuicideSelf-harmSafety
Barriers to Accessing and Continuing Mental Health Treatment Among Individuals With Dissociative Symptoms

Survey research on practical, clinical, and stigma-related barriers to starting and continuing mental-health treatment for people with dissociative symptoms.

Research StudyObservational StudyOpen AccessDissociationStigmaTreatment access
Suicide Worldwide in 2021: Global Health Estimates

WHO estimates of global suicide mortality in 2021, including age-standardized rates by sex.

Clinical ReferenceObservational StudyOpen AccessSuicideMen's healthGlobal health
Traditional Masculinity and Men's Psychological Help-Seeking: A Meta-Analysis

Meta-analysis of associations among traditional masculinity, gender-role conflict, help-seeking attitudes, and self-stigma.

Systematic ReviewSystematic ReviewAbstract OnlyMen's healthMasculinityHelp-seeking
Posttraumatic Stress Disorder and Risk of Suicidal Behavior: A Systematic Review and Meta-Analysis

Systematic review and meta-analysis of associations between PTSD and suicide, suicide attempts, and suicidal ideation.

Systematic ReviewSystematic ReviewAbstract OnlyPTSDSuicideTrauma
Systematic Review of Beliefs, Behaviours and Influencing Factors Associated With Disclosure of a Mental Health Problem in the Workplace

A review of workplace disclosure decisions, anticipated consequences, and employer responses.

Systematic ReviewSystematic ReviewOpen AccessDisclosureWorkStigma
Evidence for Effective Interventions to Reduce Mental Health-Related Stigma and Discrimination

A systematic review of medium- and long-term anti-stigma interventions.

Systematic ReviewSystematic ReviewOpen AccessStigmaDiscriminationEvidence review

Practical Support

Evidence-informed material on safety planning, daily functioning, and support.

Dissociative Disorders Therapist Directory

A searchable directory of clinicians who list dissociative disorders among their areas of work.

Support ServiceEducational ReferencePublic ServiceTherapist searchDissociationDirectory
Find a Therapist

A searchable directory of current ISSTD therapist and professional members.

Support ServiceEducational ReferencePublic ServiceTherapist searchDissociationDirectory
Fact Sheet V: Getting Treatment for Complex Trauma and Dissociation

Public guidance on finding a therapist, questions to ask, costs, and assessing fit.

Clinical ReferenceEducational ReferenceOpen AccessTherapist searchComplex traumaDissociation
Obsessive-Compulsive Disorder: When Unwanted Thoughts or Repetitive Behaviors Take Over

Public health overview of obsessive thoughts, compulsive behavior, distress, and common checking patterns in OCD.

Clinical ReferenceEducational ReferenceOpen AccessOCDComorbidityMental health
Common Reactions After Trauma

Public guidance on common emotional and cognitive reactions after trauma, including self-blame, guilt, and shame.

Clinical ReferenceEducational ReferenceOpen AccessTraumaSelf-blameShame
Denial and Doubt in Dissociative Disorders

Educational guidance on denial, doubt, stress, and interrupting circular reassurance-seeking around dissociative symptoms.

Clinical ReferenceEducational ReferenceOpen AccessDissociationDenialCoping
Acceptance and Commitment: Implications for Prevention Science

Peer-reviewed overview of ACT processes, including cognitive defusion and relating to thoughts without treating them as literal facts.

Clinical ReferenceExpert ConsensusOpen AccessACTCognitive defusionCoping
Thought Defusion: Cognitive Distancing Techniques

Plain-language worksheet introducing thought defusion and several ways to practice stepping back from distressing thoughts.

Clinical ReferenceEducational ReferenceOpen AccessACTCognitive defusionWorksheet
On Radical Acceptance (Part 1)

DBT educational resource explaining radical acceptance as acknowledgment rather than agreement or approval.

Clinical ReferenceEducational ReferenceOpen AccessDBTRadical acceptanceCoping
Radical Acceptance Examples

Plain-language DBT worksheet explaining radical acceptance and illustrating the skill through everyday examples.

Clinical ReferenceEducational ReferenceOpen AccessDBTRadical acceptanceWorksheet
Comparison of the Safety Planning Intervention With Follow-up vs Usual Care

A large cohort comparison of a brief safety-planning intervention with follow-up contact.

Research StudyObservational StudyOpen AccessSafety planningSuicide preventionCrisis care

Books and Lived Experience

Clearly labeled clinical books, workbooks, and first-person resources.

Lived Experience as a Therapist with Dissociative Identities

A therapist writing from lived experience discusses clinical language, respect for identity states, and feeling heard in treatment.

Clinical ReferenceLived ExperienceOpen AccessDIDLived experienceClinical language
My Experience of Living With Dissociative Identity Disorder: Denial

A lived-experience account of denial, uncertainty, and changing access to what feels known in DID.

Clinical ReferenceLived ExperienceOpen AccessDIDDenialLived experience
The Trinity of Trauma: Ignorance, Fragility, and Control, Volumes I and II

A wide-ranging history of trauma concepts and dissociation, including the author's structural-dissociation perspective.

BookEducational ReferencePaid Or BorrowedTrauma historyDissociationPsychiatry
Once Upon a Text: Hysteria From Hippocrates

Historical scholarship on hysteria, Hippocratic texts, and the risks of projecting later diagnoses backward.

BookEducational ReferencePaid Or BorrowedHysteriaGenderHistory
Repressed Memories of Child Abuse: What I Wish I'd Known

A lived-experience account of diagnostic uncertainty and the fear of assuming an unknown history of extreme abuse.

Clinical ReferenceLived ExperienceOpen AccessDIDMemoryLived experience
The Natural History of Multiple Personality Disorder

A book chapter drawing on Kluft's case-finding work, 210 personally interviewed cases, and patients who returned after declining treatment.

BookExpert ConsensusPaid Or BorrowedDIDClinical courseNatural history

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