Featuring multidisciplinary and transcultural investigations, this volume showcases state-of-the-art scholarship about the impact of argumentation-based discourses and field-specific argumentation practices in a wide range of communities of practice belonging to the media, social, legal and political spheres. The investigations make use of integrative, wide-ranging theoretical perspectives and empirical research methodologies with a focus on argumentation strategies in real-life environments, both private and public, and in constantly growing virtual environments. This book brings together linguists, argumentation scholars, philosophers and communication specialists who convincingly show how interpersonal and/or intergroup interactions shape, challenge or change the argumentative practices of users, what argumentation skills and strategies become critical and consequential, how argumentative discourse contexts may stimulate or prevent critical reflection and debate, and what are the wider implications at personal, institutional and societal levels.