OPEC behavior: a test of alternative hypotheses
检验并比较了关于欧佩克的多种理论模型，发现部分市场分享卡特尔模型最能解释其生产行为，而竞争模型适用于多数非欧佩克产油国，为理解油价走势提供依据。
Since interpretations of past and future oil price patterns depends on the model chosen, the author tests and compares alternative theories of OPEC as a first step in validating the choice on any one model. The results show that among OPEC countries, the partial market-sharing cartel model is the only model not rejected by at least some of the 11 members and gives the best explanation of production. In comparison with 11 non-OPEC countries, the competitive model could not be rejected for 10 of the 11 non-OPEC producers. This raises the question of why, if OPEC is a cartel, Friedman's predictions have not come true, and introduces new questions for future research. 19 references, 3 tables.