Now in paperback this bestselling classic presents seminal theory & research on posttraumatic stress disorder (PTSD). Together the leading editors & contributors comprehensively examine how trauma affects an individuals biology conceptions of the world & psychological functioning. Key topics include why certain people cope successfully with traumatic experiences while others do not the neurobiological processes underlying PTSD symptomatology enduring questions surrounding traumatic memories & dissociation & the core components of effective interventions. A highly influential work that laid the foundation for many of the fields continuing advances this volume remains an immensely informative & thought-provoking clinical reference & text. A new preface to the paperback edition situates the book within the context of contemporary research developments.