Market Power and Cartel Formation: Theory and an Empirical Test
利用美国农产品营销令这一合法卡特尔机制，检验了卡特尔形成的理论假设，发现需求弹性、市场份额、进入壁垒等因素显著影响卡特尔采纳概率。
Antitrust enforcement makes it difficult to test theories of cartel formation because most attempts to form cartels are blocked or kept secret. However, federal laws allow U.S. produce growers to operate marketing cartels through devices called “marketing orders.” These cartels use quantity controls and quality standards to raise prices of fresh produce. Some growers have adopted marketing orders, and others have not. This paper develops and tests a positive theory of the adoption of marketing orders. The theory suggests that growers in a region are more likely to adopt a marketing order if the demand for fresh produce is inelastic, the growers’ market share in the fresh market is large, there are barriers to entry and expansion, the fraction of the output the growers ship to the fresh market is not too large or too small, growers are homogeneous, and large cooperatives exist. Probit analyses support these hypotheses.