Using Bid Rotation and Incumbency to Detect Collusion: A Regression Discontinuity Approach
Using Bid Rotation and Incumbency to Detect Collusion: A Regression Discontinuity Approach
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使用投标轮换和任职来检测共谋:断点回归方法
DOI:
10.1093/restud/rdac013
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Chassang Sylvain
中科院分区:
文献类型:
--
作者:
Kawai Kei;Nakabayashi Jun;Ortner Juan;Chassang Sylvain
Cartels participating in procurement auctions frequently use bid rotation or prioritize incumbents to allocate contracts. However, establishing a link between observed allocation patterns and firm conduct has been difficult: there are cost-based competitive explanations for such patterns. We show that by focusing on auctions in which the winning and losing bids are very close, it is possible to distinguish allocation patterns reflecting cost differences across firms from patterns reflecting non-competitive environments. We apply our tests to two datasets: the sample of Ohio milk auctions studied in Porter and Zona (1999, “Ohio School Milk Markets: An Analysis of Bidding”,RAND Journal of Economics,30, 263–288), and a sample of municipal procurement auctions from Japan.
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