The Routledge International Handbook of Dialectical Thinking is a landmark volume offering a multi-disciplinary compendium of the research, theory and practice that defines dialectical thinking, its importance and how it develops over the lifespan. For the first time, this handbook brings together theory and research on dialectical thinking as a psychological phenomenon from early childhood through the human lifespan. Grounding dialectical thinking in multiple philosophical traditions stemming from antiquity, it explores current psychological models of such thought patterns and shows how these can be applied in everyday life and across multiple disciplines, including philosophy, physics, mathematics, and international relations. The handbook explains the nature of dialectical thinking, why it is important, and how it can be developed in children and in adults. It concludes with a final chapter depicting a discussion among the authors, exploring the question ‘How could dialectical thinking be the antidote to dogma?’ Written by a group of international scholars, this comprehensive publication is an essential reference for researchers and graduate students in psychology and the social sciences, as well as scholars interested in integrating different perspectives and issues from a wide variety of disciplines.