Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/8580
Title: Bunching below thresholds to manipulate public procurement
Authors: Taş, Bedri Kamil Onur
Keywords: Public procurement
Manipulation
Competition
European union
Regression Discontinuity Design
Collusion
Inference
Issue Date: 2022
Publisher: Physica-Verlag Gmbh & Co
Source: Tas, B. K. O. (2022). Bunching below thresholds to manipulate public procurement. Empirical Economics, 1-17.
Abstract: Manipulative authorities can bunch tenders just below thresholds to implement noncompetitive procurement practices. I use regression discontinuity manipulation tests to identify the bunching manipulation scheme. I investigate the European Union public procurement data set that covers more than two million contracts. The results show that 10-13% of the examined authorities exhibit a high probability of bunching. These authorities are less likely to employ competitive procurement procedures. Local firms are more likely to win contracts from a bunching authority. The probability that the same firm wins contracts repeatedly is high when an authority has high bunching probability. Empirical results suggest that policy makers can effectively employ regression discontinuity manipulation tests to determine manipulative authorities.
URI: https://doi.org/10.1007/s00181-022-02250-4
https://hdl.handle.net/20.500.11851/8580
ISSN: 0377-7332
1435-8921
Appears in Collections:İktisat Bölümü / Department of Economics
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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