Social anxiety is a common human phenomenon. However, when it is associated with such intense fear of embarrassment and shame that it leads to significant distress and major impairments in work and social relationships, a social anxiety disorder may be present. Due to the variety of symptoms, diagnosing the condition in practice can sometimes be challenging. Furthermore, treatment is often complicated by the strong tendencies to avoid situations and by the entrenched processing patterns of those affected. The revised edition of this volume provides current insights into the diagnosis and treatment of social anxiety disorder. After describing the disorder and the most important explanatory models, as well as presenting disorder-specific diagnostic approaches, the implementation of treatment is explained in a practical manner. The focus is on cognitive therapy.