Speaking of Psychology
Speaking of Psychology

What is dissociative identity disorder? With Bethany Brand, PhD

Dissociative identity disorder – which many people recognize by its former name, multiple personality disorder – is one of Hollywood’s favorite psychology-related topics, with a decades-long history of movie and TV portrayals, most recently in this spring’s “Moon Knight.” But in real life, DID does

Topics Discussed

Episode Summary

Executive Summary: The episode explains dissociative identity disorder (DID) as a trauma-based condition rooted in early, repeated childhood abuse and marked by dissociative self-states, memory gaps, and severe comorbid symptoms. Dr. Bethany Brand contrasts clinical reality with sensational media portrayals, reviews assessment and staged treatment approaches, discusses brain-imaging evidence, and argues that stigma and undertraining keep DID underdiagnosed and controversial.

Main Topics: What DID and dissociation are: Brand defines dissociation as a disconnection of normally integrated functions and explains that DID develops when repeated early trauma leads children to split off emotions, memory, and bodily experience into distinct self-states. Media portrayals and stigma: The conversation criticizes Hollywood and TV depictions of DID as sensationalized, violent, or sexualized, and notes that these stereotypes can shame patients and even frighten clinicians. How DID presents in real life: Brand says DID rarely appears as dramatic switching; instead, patients usually present with depression, PTSD, self-harm, sleep problems, substance use, eating disorders, and memory lapses. Assessment and diagnosis: She emphasizes that many clinicians lack training in dissociative disorders and that validated questionnaires and structured interviews are needed to reduce misdiagnosis with schizophrenia, bipolar disorder, or other conditions. Treatment model and medication: Treatment is typically long-term and staged: stabilization and safety, trauma processing and grieving, then building a life with improved relationships and functioning. Medications may help symptoms, but there is no anti-dissociative drug. Brain imaging and biological evidence: Brand describes research showing distinct brain-network patterns in highly dissociative patients versus classic PTSD, and says actor imitation studies support DID as a genuine disorder. Controversy, prevalence, and next steps: She argues controversy stems from discomfort with child abuse and limited historical research, notes DID exists cross-culturally, and calls for randomized trials, standardized training, and biological markers.

Key Arguments: DID is a developmentally based trauma disorder that usually begins before age six in the context of repetitive abuse and dissociation serves an initially adaptive function. The stereotypical Hollywood version of DID is usually inaccurate and stigmatizing, often portraying men as monsters/killers and women as sexualized or dangerous. Real-world DID is frequently hidden beneath depression, PTSD, self-harm, sleep disturbance, and memory problems rather than obvious personality switches. Clinicians need specific training and validated tools because DID is commonly misdiagnosed as schizophrenia or bipolar disorder. Effective treatment is phased, trauma-informed, and long-term; rushing trauma processing can worsen symptoms. Medication may reduce anxiety, depression, or agitation, but it does not treat dissociation itself. Brain-imaging and psychometric research can distinguish genuine DID from feigned presentations, supporting its validity as a disorder. The diagnosis remains controversial largely because acknowledging it requires confronting child abuse and trauma on a large scale. DID appears across cultures worldwide, though it may be expressed differently, such as through possession-like experiences. Online self-diagnosis can be both accurate and inaccurate, so careful evidence-based assessment is essential.

Data Points: DID prevalence: slightly above 1% - Brand says general population studies place DID a bit above 1%, roughly comparable to or above bipolar disorder and schizophrenia. Dramatic switching frequency: less than 5% of cases - She says the sudden, obvious personality switches often shown in media occur in fewer than 5% of real cases. Voice hearing in DID: more than 75% - Brand says over three-quarters of people with DID hear voices, contributing to frequent misdiagnosis as schizophrenia. Clinician dismissal rate: up to 35% - She reports that as many as 35% of DID clients say a clinician has been dismissive, hurtful, or mocking. Age of typical onset: before age 6 - Brand explains DID usually starts very early in childhood when repetitive abuse is occurring. Treatment stages: 3 stages - She describes treatment as stabilization/safety, trauma processing and grieving, then life-building and relational functioning. Age range served by sponsor: 12 to 28 - Newport Healthcare sponsor copy says it treats teens and young adults ages 12 to 28.

Pivotal Quotes: "that occurs in less than 5% of cases" — Dr. Bethany Brand: She is correcting the common media image of dramatic, visible switching between personalities. "The whole idea of child abuse that is profound is really distasteful. Nobody likes to think about it and know about it and hear about it." — Dr. Bethany Brand: She explains why DID remains controversial and why many people resist accepting the trauma-based model. "It is a developmentally based trauma disorder." — Dr. Bethany Brand: She summarizes the core etiology of DID as beginning in early childhood trauma.

Implications: For listeners, the episode encourages skepticism toward sensational portrayals and urges trauma-informed evaluation by trained clinicians. For the field, it points to a need for better assessment, treatments, biomarkers, and education to reduce misdiagnosis and stigma.

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