Background: To provide high-quality patient care, effective communication and interpersonal skills are necessary for physicians. A 360-degree evaluation of residents in the department of medicine was conducted to assess their interpersonal and communication skills. The measurement properties and utility of the multi-source ratings were investigated. Methods: A cross-sectional assessment of a cohort of Internal Medicine residents was conducted at the Aga Khan Medical University in Pakistan. Every resident (n = 49) was evaluated by eight raters, including physicians, nurses and unit staff. Each resident also completed a self-evaluation. Evidence to support the validity of the ratings was gathered by exploring performance differences amongst m...