Following the success of international bestseller How Brands Grow: What Marketer's Don't Know comes a new book that takes readers further on a journey to smarter, evidence-based marketing. How Brands Grow Part 2, by Jenni Romaniuk and Byron Sharp, is. This book provides evidence-based answers to the key questions asked by marketers every day. Tackling issues such as how brands grow, how advertising really works, what price promotions really do and how loyalty programs really affect loyalty, How Brands Grow presents decades of research in a style that is written for marketing professionals to grow their brands.