Book excerpt: Winner of ISSTD's 2009 Pierre Janet Writing Award for the best publication on dissociation in 2009! Dissociation and the Dissociative Disorders is a book that has no real predecessor in the dissociative disorders field. It reports the most recent scientific findings and conceptualizations about dissociation; defines and establishes the boundaries of current knowledge in the dissociative disorders field; identifies and carefully articulates the field’s current points of confusion, gaps in knowledge, and conjectures; clarifies the different aspects and implications of dissociation; and sets forth a research agenda for the next decade. In many respects, Dissociation and the Dissociative Disorders both defines and redefines the field.