Principles of Dramaturgy - Paperbackby Robert Scanlan (Author) In Principles of Dramaturgy, Robert Scanlan explains the invariant principles behind the construction of stage and performance events of any style or modality. This book contains all that is essential for training a professional stage director and or dramaturg, including the "plot bead" technique for analyzing play scripts developed by Scanlan. It details all the steps for the full implementation of "Production Dramaturgy"