DID Test (Dissociative Identity Disorder)

A DID test screens for dissociative symptoms using the Dissociative Experiences Scale (DES-II). DID is characterized by distinct identity states, amnesia, and trauma-related dissociation. Diagnosis requires full psychiatric evaluation. Bernstein & Putnam (1986).

What is DID and How is it Assessed?

Dissociative Identity Disorder (DID) is a complex dissociative disorder characterized by the presence of two or more distinct personality states (alters), recurrent gaps in memory for everyday events and personal information, and significant distress or impairment in daily functioning. DID is classified under Dissociative Disorders in DSM-5-TR (300.14).

DID is strongly linked to severe, repeated early childhood trauma, particularly before age 9. It is understood as a complex adaptation to overwhelming trauma in which the developing mind compartmentalizes experiences into separate identity states. The disorder is estimated to affect approximately 1–3% of the general population, though it is frequently misdiagnosed or goes unrecognized for years, with an average of 6–12 years between onset and correct diagnosis.

The criterion standard for diagnosis is the SCID-D (Structured Clinical Interview for DSM-5-TR Dissociative Disorders), a full clinician-administered interview. The Dissociative Experiences Scale (DES-II) by Bernstein and Putnam (1986) is the most widely used screening tool, a 28-item self-report scale measuring the frequency of dissociative experiences. A DES-II score above 30 identifies a subset for more detailed assessment, but elevated DES scores are not specific to DID and can reflect other dissociative or trauma-related disorders.

DES-II Score Interpreter

Enter your DES-II average score (0–100) to interpret dissociation severity. The DES-II score is the mean of all 28 item scores, each rated 0–100.

Each item asks what percentage of time (0–100%) a dissociative experience occurs. Sum all 28 responses ÷ 28 = DES score.

DES-II © Carlson & Putnam (1993). Available for research and clinical use. A DES-II score alone cannot diagnose DID or any dissociative disorder, diagnosis requires full clinical evaluation including the SCID-D. If you are experiencing dissociative symptoms, please consult a trauma-informed mental health professional.

DES-II Score Reference

Bernstein & Putnam (1986); Carlson & Putnam (1993). DES-II norms vary across clinical and general population samples. Scores must be interpreted in clinical context with structured diagnostic interview.

Score Interpretation

DSM-5-TR DID Diagnostic Criteria

Dissociative Disorders Spectrum

Dissociation exists on a spectrum from normal (highway hypnosis, daydreaming) to pathological. DSM-5-TR dissociative disorders include five diagnoses.

Dissociation Assessment Tools

Evidence-based treatment for DID is phase-based trauma therapy: Phase 1 (safety, stabilization, symptom management), Phase 2 (trauma processing with EMDR or modified CPT), Phase 3 (integration and rehabilitation). Leading approaches include the ISSTD (International Society for the Study of Trauma and Dissociation) Treatment Guidelines (2011). Treatment is typically long-term but outcomes are generally positive with skilled, trauma-informed care. Many individuals with DID achieve significant symptom reduction and improved daily functioning.

Trauma & Dissociation Outcome Monitoring

PCL-5, DES-II, PHQ-9, and trauma-specific outcome measures, integrated trauma and dissociation monitoring for complex PTSD and dissociative disorder programs.