The Lerner Index of Monopoly Power: Origins and Uses
追溯勒纳指数的起源，分析其优缺点，并探讨其在反垄断执法中的作用，指出该指数更适合衡量企业定价自主权而非维持垄断价格的能力。
Abba Lerner's paper in the Review of Economic Studies (1934) is the source of what is now referred to as the Lerner Index of monopoly power. The Lerner Index has become the standard measure of monopoly power and one of the most widely cited indexes in the discipline of economics. This paper traces the origins of the index, sets out its strengths and weaknesses, and examines its role in antitrust enforcement. The Index is a better indicator of a firm's price-setting discretion than its ability to sustain monopoly prices.