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" as it is practiced in professional theatres, and treats form and action as foundational cornerstones of all performance, rather than "story" elements - a frequent and debilitating misprision in theatre practice. Scanlan's unique approach offers practical training that is supported by detailed diagrams and contextualized instructions, making this the missing text for classes in dramaturgy. Serving stage directors, dramaturgs, actors, designers, and playwrights, Principles of Dramaturgy is a comprehensive guide that puts the training of capable practitioners above all else.