A linear-quadratic dynamic oligopoly model is developed and applied to the world coffee export market. The model nests various market structures using either open-loop or feedback strategies. The theoretical properties of this model are described. For given observed behavior, the assumption of...

A low-cost dominant firm will drive all competitive fringe firms out of the market if all firms have rational expectations; however, the dominant firm will not predate (price below marginal cost). Since a dominant firm will not drive out fringe firms if they have myopic expectations it may be in...

Where consumers have imperfect information about specific firms' prices and lack information about the market, firms have informational market power. In general, improving the consumer's information about each firm's price will not necessarily lower average market price. We show, however, that...

Two hypotheses implicit in the use of composite measures of attributions in tests of learned helplessness theory (but not implicit in the theory itself) were tested: the hypotheses that relationships between depression and the three types of attributions are equal in magnitude, and linear. To...