Anxiety disorders are amongst the most common of all mental health problems. Research in this field has exploded over recent years, yielding a wealth of new information in domains ranging from neurobiology to cultural anthropology to evidence-based treatment of specific disorders. This book offers a variety of perspectives on new developments and important controversies relevant to the theory, research, and clinical treatment of this class of disorders. Clinicians will find reviews of state-of-the-art treatments for panic disorder, social anxiety disorder, phobias, obsessive-compulsive disorder, generalized anxiety disorder, and post-traumatic stress disorder, as well as controversies over diagnostic and treatment issues. Researchers will find in-depth consideration of important selected topics, including genetics, neuroimaging, animal models, contemporary psychoanalytic theory, and the impact of stressors. This book illustrates the enormous advances that have occurred in anxiety research and describes the evolving multi-disciplinary efforts that will shape the future of the field.