We propose a general equilibrium model with multiple securities in which investors' risk preferences and expectations of dividend growth are time-varying. While time-varying risk preferences induce the standard positive relation between the dividend yield and expected returns, time-varying...

We consider organizations that optimally choose the level of adaptation to a changing environment when coordination among specialized tasks is a concern. Adaptive organizations provide employees with flexibility to tailor their tasks to local information. Coordination is maintained by limiting...

Recent theories of economic growth, including those of P. Romer (1986, 1990), M. Porter (1990), and J. Jacobs (1969, 1984), have stressed the role of technological spillovers in generating growth. Because such knowledge spillovers are particularly effective in cities, where communication between...

Motivated by the behavior of asset prices, trading volume, and price volatility during episodes of asset price bubbles, we present a continuous-time equilibrium model in which overconfidence generates disagreements among agents regarding asset fundamentals. With short-sale constraints, an asset...

Within an optimal contracting framework, the authors analyze the optimal number of creditors a company borrows from. They also analyze the optimal allocation of security interests among creditors and intercreditor voting rules that govern rule renegotiation of debt contracts. The key to the...

This paper develops a dynamic general equilibrium model of an agricultural economy in which poor farmers borrow from rich farmers. Because output is stochastic (we allow for idiosyncratic and aggregate shocks), there may be default ex post. We compare equilibria with and without political...

The authors argue that, although decentralization has advantages in finding low-cost solutions, these advantages are accompanied by coordination problems, which lead to delay or duplication of effort or both. Consequently, decentralization is desirable when there is little urgency or a great...

In an environment characterized by weak contractual enforcement, sovereign lenders can enhance the likelihood of repayment by making their claims more difficult to restructure ex post. We show, however, that competition for repayment between lenders may result in a sovereign debt that is...