We develop a model in which the value of a firm's reputation for quality increases gradually over time. In our model, a firm's ability to deliver high quality at any given period depends on how much it invests in quality. This investment is the firm's private information. Also, a firm's current...

We present a model of industry evolution where the dynamics are driven by a process of endogenous innovations followed by subsequent embodiments in physical capital. Our model stresses the causal relationship between past Ramp;D expenditures and current investments in machinery and equipment....

In this paper, we model the dynamic portfolio choice problem facing banks, calibrate the model using empirical data from the banking industry for 1984-1993, and assess quantitatively the impact of recent regulatory developments related to bank capital. The model suggests that two aspects of the...

In this paper we model the dynamic portfolio choice problem facing banks, calibrate the model using empirical data from the banking industry for 1984-1993, and assess quantitatively the impact of recent regulatory developments related to bank capital. The model implies a U-shaped relationship...

The increasing dependence of individuals on debt financing raises several welfare considerations that we analyze in this paper. We develop a dynamic, competitive model of relationship banking to determine how regulation influences borrowing and lending behavior, and analyze how it affects...

Machines are more expensive in poor countries, and the relation is pronounced. It is hard for a Solow (1956) type of model to explain the relation between machine prices and GDP given that in most countries equipment investment is under 10% of GDP. A stronger relation emerges in a Solow (1959)...

This paper endogenizes the frequency of major discoveries and the extent of their refinement. Four axioms deliver a one-parameter family of beliefs that guide exploratory effort. Such effort trades off the prospect of major new discovery against the chance of successfully refining discoveries...