Affiliation:
1. Department of Economics, University of Zurich (email: )
2. World Bank (email: )
Abstract
Interference across competing firms in RCTs can be informative about market structure. An experiment that subsidizes a random subset of traders who buy cocoa from farmers in Sierra Leone illustrates this idea. Interpreting treatment-control differences in prices and quantities purchased from farmers through a model of Cournot competition reveals differentiation between traders is low. Combining this result with quasi-experimental variation in world prices shows that the number of traders competing is 50 percent higher than the number operating in a village. Own-price and cross-price supply elasticities are high. Farmers face a competitive market in this first stage of the value chain. (JEL L13, L14, O13, Q12, Q13)
Publisher
American Economic Association
Subject
General Economics, Econometrics and Finance
Cited by
10 articles.
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