On the Measurement of Market Power in the Banking Industry
比较了两种最常用的非结构模型（行为参数法和收入检验）在希腊、拉脱维亚和西班牙银行面板数据上的市场势力估计，并提出了动态面板数据模型以解决数据动态性问题，发现静态方法低估了市场势力。
Abstract: This paper compares the estimates of the two most widely used non‐structural models for market power measurement in banking, namely the conduct parameter method and the revenue test, as applied to three panels of Greek, Latvian and Spanish banks over the period 1993–2004. We also propose a dynamic reformulation of these models within a panel data context, in order to address possible statistical problems associated with the dynamic nature of bank‐level data. The results suggest that both static methods provide lower estimates of market power relative to their dynamic counterparts. Therefore, the inclusion of some dynamics in the models, even though it increased estimation complexity, helped to reveal some collusive behavior of banks.