ear Colleagues,This is the second issue of Dialogues in Clinical Neuroscience to be devoted to thetheme of anxiety disorders (see Dialogues in Clinical Neuroscience, 2002,Volume 4, No. 3).Historically, different schools of psychiatry have approached anxiety disorders with dif-ferent and somewhat opposing models. These models can now be grouped into a globalapproach that covers psychological, biological, and pathophysiological aspects. In linewith the format of our journal, we have once again decided to explore the many facetsof psychiatric syndromes.The pathophysiology of anxiety disorders is specific in the sense that differentmechanisms underlie different clinical syndromes and because there is known to be ananxiety-related increase in the arousal and activation of stress-responsive brain systems.Thus, the question of the unitary or multiple nature of anxiety disorders is raised, as ithas been for psychotic or mood disorders.This question is particularly relevant for obses-sive-compulsive spectrum disorders.Research into anxiety and anxiety disorders has recently been oriented towardmechanisms and genes that might be protective.Thus, psychological and biological studiesare no longer focused exclusively on the dysfunctional aspects of the brain; they nowaddress how the brain works, in order to generate resistance to failures and disorders.Thepapers on resilience are illustrations of this innovative direction in neuroscience, ie, iden-tifying how we are naturally protected from illness and how we can become healthy again.These results leave little doubt that new ideas and techniques are increasing ourunderstanding of anxiety disorders and lead to innovations in therapy and prevention.We would like to end with the announcement of the Dialogues in ClinicalNeuroscience website, which is now available online at www.dialogues-cns.org. You aremost welcome to visit our site to browse the themes covered in previous and futureissues, and consult previous volumes.Yours sincerely,Jean-Paul Macher, MDMarc-Antoine Crocq, MDE d i t o r i a lD2 0 1