Diagnosing Expertise: Human Capital, Decision Making, and Performance among Physicians
研究医生专长的两个维度：决策能力和手术技能，发现通过行政数据可识别诊断能力差的医生，改善决策能优化剖腹产率分布，改善新生儿结局。
Expert performance is often evaluated assuming that good experts have good outcomes. We examine expertise in medicine and develop a model that allows for two dimensions of physician performance: decision making and procedural skill. Better procedural skill increases the use of intensive procedures for everyone, while better decision making results in a reallocation of procedures from fewer low-risk to high-risk cases. We show that poor diagnosticians can be identified using administrative data and that improving decision making improves birth outcomes by reducing C-section rates at the bottom of the risk distribution and increasing them at the top of the distribution.