IS FOREIGN TRADE (IM)PERFECTLY COMPETITIVE?: AN ANALYSIS OF THE GERMAN MARKET FOR BANANA IMPORTS
用结构计量模型估计德国香蕉进口市场的竞争程度，发现企业并非完全竞争，而是呈现古诺行为，这对欧盟香蕉政策的福利预测有重要影响。
Many studies have been carried out that measure welfare effects of the newly adoped common policy on banana imports by the European Union. All these studies assume that foreign trade in bananas is characterised by perfectly competitive behaviour. However, if foreign trade in bananas is imperfectly competitive, then the welfare predictions about the common banana policy may turn out to be incorrect. It is necessary, therefore, to empirically estimate the degree of market imperfection in the banana market. In this paper, we estimate the degree of market imperfection in the German market for banana imports using a structural econometric model. Based on the bootstrap procedure, we reject the hypothesis that firms in this market behave perfectly competitively, but cannot reject the hypothesis that firms are engaged in Cournot‐Nash behaviour.