Sensitivity analysis is used to ascertain how a given model output depends upon the inupt parameters. This is an important method for checking the quality of a given model, as well as a powerful tool for checking the robustness and reliability of its analysis. The topic is acknowledged as essential for good modeling practice, and is an implicit part of any modeling field. * Offers an accessible introduction to sensitivity analysis * Covers all the latest research * Illustrates concepts with numerous examples, applications and case studies * Includes contributions from the leading researchers active in developing strategies for sensitivity analysis The principles of sensitivity analysis are carefully described, and suitable methods for approaching many types of problems are given. The book introduces the modeller to the entire casual assessment chain, from data to predictions, whilst explaining the impact of source uncertainties and framing assumptions. A 'hitch-hiker's guide' is included to allow the more experienced reader to readily access specific applications. Modellers from a wide range of disciplines, including biostatistics, economics, environmental impact assessment, chemistry and engineering will benefit greatly from the numerous examples and applications.