Although competency-based medical education (CBME) has attracted renewed interest in recent years among educators and policy-makers in the health care professions, there is little agreement on many aspects of this paradigm. We convened a unique partnership - the International CBME Collaborators - to examine conceptual issues and current debates in CBME. We engaged in a multi-stage group process and held a consensus conference with the aim of reviewing the scholarly literature of competency-based medical education, identifying controversies in need of clarification, proposing definitions and concepts that could be useful to educators across many jurisdictions, and exploring future directions for this approach to preparing health professionals. In this paper, we describe the evolution of CBME from the outcomes movement in the 20th century to a renewed approach that, focused on accountability and curricular outcomes and organized around competencies, promotes greater learner-centredness and de-emphasizes time-based curricular design. In this paradigm, competence and related terms are redefined to emphasize their multi-dimensional, dynamic, developmental, and contextual nature. CBME therefore has significant implications for the planning of medical curricula and will have an important impact in reshaping the enterprise of medical education. We elaborate on this emerging CBME approach and its related concepts, and invite medical educators everywhere to enter into further dialogue about the promise and the potential perils of competency-based medical curricula for the 21st century.

With the introduction of Tomorrow's Doctors in 1993, medical education began the transition from a time- and process-based system to a competency-based training framework. Implementing competency-based training in postgraduate medical education poses many challenges but ultimately requires a demonstration that the learner is truly competent to progress in training or to the next phase of a professional career. Making this transition requires change at virtually all levels of postgraduate training. Key components of this change include the development of valid and reliable assessment tools such as work-based assessment using direct observation, frequent formative feedback, and learner self-directed assessment; active involvement of the learner in the educational process; and intensive faculty development that addresses curricular design and the assessment of competency.

Medical teachers trained in conventional educational systems need faculty development to prepare them to function effectively in a competency-based medical education (CBME) system. Faculty development can provide knowledge about CBME, training in new teaching techniques in different domains of medical practice, and new strategies for providing the authentic and regular assessment that is an essential aspect of CBME. A systems-wide approach as well as efforts to provide training in CBME to individual teachers in both the undergraduate and postgraduate systems will be important. The wide implementation of CBME will be challenging and slow, and will meet with resistance, but various strategies can be used address these challenges. Faculty development is fundamental to the effectiveness of those strategies.