This document discusses optimum methods for assessing the affective domain in medical education. It recommends assessing desirable professional attributes through authentic assessments using real-world tasks. Effective tools include checklists, rating scales, and rubrics. Rubrics are most informative as they describe different performance levels. Authentic assessments include evaluations by supervisors, peers, self, and standardized patients through longitudinal observations, clinical vignettes, and direct observations. Assessing affective outcomes formatively over time using authentic tasks and rubrics best follows the advice to assess important rather than convenient outcomes.