Improvisation has long been central to drama education for young students and professional actors alike. Since the pioneering work of Keith Johnstone, a form of "additive" Improvisation has evolved around the world which has become arguably more popular than the Commedia dellArte of the 1600s. Eschewing the shorter forms of game-based Improv in order to focus on long form Open Scenes (also known as "Harolds"), the author examines the way that nine key Improv Poetics - the Offer, Endow, Justify, Extend, Advance, Shelve / Reincorporate, Accept, Block and Yield - are used to make long...