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α: calibrated so average coauthorship-adjusted count equals average raw count
Abstract This paper analyzes a sample of Section 1, Sherman Act price fixing cases brought by the US Department of Justice between 1961 and 2013. Over 500 cartels were prosecuted during this period. The determinants of cartel formation and cartel breakup are estimated, including analysis of the impact of the discount rate, business cycles, and antitrust policy. We find that cartels are more likely to break up during periods of high real interest rates, presumably because higher interest rates are associated with greater impatience. The adoption of a stronger amnesty policy has no significant impact on cartel breakup over this period, although the results suggest some association with lower cartel formation rates.