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Private Monitoring and Cartel Duration: An Instrumental Variables Approach

Jun Zhou

Zhejiang Wanli University; Tilburg Law and Economics Center (TILEC)

January 1, 2012

Colluding firms often exchange private information and make transfers within the cartels based on the information. Estimating the impact of such collusive practices- known as the "lysine strategy profile (LSP)"- on cartel duration is difficult because of endogeneity and omitted variable bias. I use firms' linguistic differences as an instrumental variable for the LSP in 135 cartels discovered by the European Commission since 1980. The incidence of the LSP is not significantly related to cartel duration. After correction for selectivity in the decision to use the LSP, statistical tests are consistent with a theoretic prediction that the LSP increases cartel duration.

Number of Pages in PDF File: 38

Keywords: the lysine strategy profile, post-agreement information exchange, within-cartel transfers, monitoring, verification and promotion of compliance, cartel duration, endogenous covariates

JEL Classification: D43, K21, K42, L13

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Date posted: January 17, 2012 ; Last revised: May 2, 2012

Suggested Citation

Zhou, Jun, Private Monitoring and Cartel Duration: An Instrumental Variables Approach (January 1, 2012). Available at SSRN: http://ssrn.com/abstract=1985798 or http://dx.doi.org/10.2139/ssrn.1985798

Contact Information

Jun Zhou (Contact Author)
Zhejiang Wanli University ( email )
Ninbo, Zhejiang
Tilburg Law and Economics Center (TILEC) ( email )
Warandelaan 2
Tilburg, 5000 LE
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