Dr. Joern Meissner, the founder of Manhattan Review, has over fifteen years of teaching experiences in undergraduate and graduate programs at prestigious business schools in the USA, UK and Germany. He created the original lectures, which have been expanded and modified by the Manhattan Review Team to reflect the evolving nature of the GMAT. Dr. Meissner received his Ph.D. in Management Science from Graduate School of Business at Columbia University (Columbia Business School) in New York City and is a recognized authority in the area of Supply Chain Management (SCM), Dynamic Pricing and Revenue Management. He frequently advises companies ranging from Fortune 500 companies to emerging start-ups on various issues related to his research expertise. His academic homepage is www.meiss.com.