Theories are a set of propositions that link concepts together through a rational argument. These statements describe, explain, illuminate, prescribe or organize a particular phenomenon (Jary & Jary, 1995; Walker & Avant, 2005). Theories also generate complex and comprehensive under- standings of phenomenon that are not easily explained, such as how certain cultures operate, how organizations function and why individuals interact in certain ways. They help to illuminate different aspects of a phenomenon and provide a framework for understanding them. They also generate knowledge that can be generalized across settings.
In this editorial, we outline the need for using (grand, mid-range and micro) theories to enhance our under- standing of interprofessional education, practice and care. We argue why we need to engage in theoretical development in the interprofessional field, and why theoretical development should not be seen as a luxury, or low priority, but a central feature of the work we do developing and studying interprofessional education, practice and care.