Warlords complete for turf that provides them with rents and "taxable" resources while also providing a semblance of security within their respective territories. Because such competition takes place through the use of force or the threat of the use of force, more competition can lead to lower...

For a perfectly competitive firm with a constant returns to scale techenology, a greater price uncertainty has been shown to increase investment even in the presence of irrecersible investment. We show, however, that the option value generated by a one-time fixed cost can cause increasibg...

Existing work on the costs of insecure property has largely focused on the overexploitation problem of common pool resources. We investigate other costs of insecure resources - uncertainty costs, the absence of exchange, and enforcement costs - within a simple general equilibrium setting.

An alternative condition, called reduction invariance, is given to derive Prelec's (1998) form for the weighting function in separable utility theory. The condition, which is a variant on the reduction of compound gambles, is appreciably simpler and more empirically testable than Prelec's...

We present a simulation model designed to determine the impact on congestion of policies for dealing with non-recurrent congestion (i.e. travel time uncertainty).

Achieving peace and building the institutions that will make it last require much time and effort on the part of adversaries. While making this effort, the likelihood of peace is uncertain and preparations for confict are on-going. We examine a setting that takes such considerations into...