Measuring research benefits in an imperfect market: second comment
推广了存在扭曲时研究产生更大收益的充要条件，并指出传统成本效益计算中一个重要的偏差来源。
Abstract This note generalizes a finding about the necessary and sufficient conditions for research to generate greater benefits in the presence of distortions and highlights a significant source of bias in conventional cost‐benefit calculations.