Assessment of clinical reasoning: three evolutions of thought.

Although assessing clinical reasoning is almost universally considered central to medical education it is not a straightforward issue. In the past decades, our insights into clinical reasoning as a phenomenon, and consequently the best ways to assess it, have undergone significant changes. In this article, we describe how the interplay between fundamental research, practical applications, and evaluative research has pushed the evolution of our thinking and our practices in assessing clinical reasoning.