Now in a fully revised and updated second edition, this landmark work brings together leading experts to comprehensively examine all aspects of childhood-onset anxiety disorders. The volume presents the major theoretical perspectives currently informing research and clinical practice, reviews key issues in assessment and diagnosis, and marshals the latest findings on each disorder and its treatment. All chapters in the second edition have been extensively rewritten to reflect significant advances in theory and research, including the results of controlled treatment studies. Important new chapters have been added on behavioral genetics, combined cognitive-behavioral therapy and pharmacotherapy, and prevention. Additionally, separate chapters now cover several disorders that were previously addressed in less depth: generalized anxiety disorder, specific phobias, separation anxiety, and panic.