Marlene Steinberg, MD is author of The Stranger in the Mirror: Dissociation: The Hidden Epidemic. She is also the originator of The Structured Clinical Interview for DSM-IV Dissociative Disorders (SCID-D), the breakthrough diagnostic test that allows therapists worldwide to diagnose dissociative disorders based on rigorous scientific testing. She has also authored The Handbook for the Assessment of Dissociation: A Clinical Guide, a resource for therapists offering systematic guidelines for assessing dissociative symptoms and disorders. This article is © Copyright 2008 Marlene Steinberg, MD. All rights reserved. Reprinted from www.drmsteinberg.com with permission.