We point out several conceptual difficulties of the rational expectations equilibrium concept. In particular we show that such an equilibrium need not be incentive compatible and need not be implementable as a perfect Bayesian equilibrium . A comparison of rational expectations equilibria with...

This paper analyzes the welfare effects of permitting firms to negotiate contractually the right to allow corporate insiders to trade shares in the firm on private information. A computational framework is employed to (i) analyze formally the effects of insider trading on managerial investment...

In the context of differential information economies, with and without free disposal, we consider the concepts of Radner equilibrium, rational expectations equilibrium, private core, weak fine core and weak fine value. We look into the possible implementation of these concepts as perfect...

The rational expectations equilibrium has been criticized as an equilibrium concept in market game environments. Such an equilibrium may not exist generically, or it may introduce unrealistic assumptions about an economic agent's knowledge or computational ability. We define a rational...

The mathematization of economics is almost exclusively in terms of the mathematics of real analysis which, in turn, is founded on set theory (and the axiom of choice) and orthodox mathematical logic. In this paper I try to point out that this kind of mathematization is replete with economic...

We study firms’ incentives to acquire costly information in booms and recessions to understand the role of endogenous information in explaining business cycles. We find that when the economy has been in a boom in the previous period, and firms enter the current period with an optimistic...

With a posterior price matching (PM) policy, a seller guarantees to reimburse the price difference to a consumer who buys a product before the seller marks it down. Such a policy has been widely adopted by retailers. We examine the impact of a posterior PM policy on consumers' purchasing...

Traders' expected utilities in fully revealing rational expectations equilibrium (REE) are shown to decrease as the number of informed traders is increased for an asset market model with diverse information as in Grossman (1976). It follows that no trader has any incentive to acquire information...