This book introduces readers to the field of dyadic health science, offering a theoretical understanding of how two people experience and navigate health and illness together. It provides a detailed overview of how the field has evolved over time, exploring its links to relationship science, psychology, nursing and health-related fields, family science, social work, gerontology, and the science of behaviour change. Chapters examine established and emerging theories, methods, and interventions in dyadic health science, providing numerous state-of-the-art examples of best practices in the field. Combining the expertise of the three authors with insights from 22 scholars, the volume evaluates the current challenges and future directions in the field. By making the theory and methods of dyadic health science accessible, this book provides guidance on building research skills for both seasoned professionals and early-career researchers alike.

‘From the introduction to the last chapter on resources and tips to get started, I learned new information in every chapter on a topic that I am well-versed in. What this book uniquely captures is the interprofessional nature of the dyadic science. It is truly a science without walls.’

Harleah G. Buck - Sally Mathis Hartwig Professor in Gerontological Nursing and Director of the Csomay Center for Gerontological Excellence, University of Iowa

‘This book not only introduces dyadic health science but also the context and development of the field. Lyons, Rauer, and Proulx weave in testimonies that add a personal touch-reminding us that the science stems from people, relationships, and a dogged pursuit of enhancing people’s lives and health for the better.’

William Chopik - Associate Professor and Director of the Close Relationships Lab, Michigan State University