»Judicial Discretion in International Investment Arbitration. Content, Limits, Reviewability. An Analysis based on Arbitral Practice«: The thesis deals with the content, limits and reviewability of judicial discretion in international investment arbitration. Based on national and international concepts, it develops a dogmatic framework based on a narrow understanding of the term »discretion«. The practical application and the arbitral tribunals' handling of the discretionary powers are then analysed based on selected case law. The book concludes with practical information on control and balancing elements.