Troubled economic times are putting an extraordinary pressure on corporate managers, who have to make investment decisions under unprecedented uncertainty and risk. The aim of this book is to help managers to reflect upon the critical assumptions underlying the most relevant tools for valuation of corporate investments under uncertainty. It offers a wide range of working papers, journal articles and case studies which are the fruit of our recent experience in teaching, consulting and research. This book is ideally suited to both managers and MBA students who seek to improve their critical ability to make value decisions based on an array of relevant investment valuation tools.