In this book, the discussion of the normal and pathological aspects of anxiety is critically examined. A chapter on the molecular basis of anxiety is included, outlining the potential of such approach in the discovery of novel effective pharmacological interventions. The face validity, predictability and usefulness of animal models in the design of valid new efficacious products are discussed. Separate chapters dedicated to each particular type of anxiety such as generalized anxiety disorder, social phobia, posttraumatic stress disorder, panic and obsessive-compulive disorder are included. This book should be of benefit to psychiatrists, clinical psychologists, general practitioners, nurses, students and all those engaged in neuropsychiatric research.