We study the dynamics of an oligopoly market with network externalities. In contrast to earlier work, we consider a model where products are vertically differentiated and the number of firms is arbitrary. We show that the degree of network externalities has a one-to-one relationship with the...

In this paper, we study the decision to purchase life insurance as part of a lifecycle plan of consumption, savings, and labor supply. Households are subject to idiosyncratic risk in their labor productivity as well as the composition and size of their family, and respond by accumulating...

This paper puts forth a theory to explainwhy special interest groups are more prevelant in some countries. Its thesis is that uneven industrialization facilitates the formation of special interest groups with monopoly control over factor supplies. An uneven industrial structure is both an...

The objective of the paper is to develop and estimate a non-parametric dynamic model of the marriage market. Individuals are differentiated by their age and current marital status. In each period, unmarried men and women choose whether they want to marry and who to marry. Equilibrium transfers...

How can a particular allocation and prices be implemented? Under what conditions does a policy deliver a unique competitive equilibrium? How many degrees of freedom there are in the determination of the policy variables, or how many are the instruments of policy? In this paper we analyze a...

I provide empirical evidence that badly governed firms respond more to aggregate shocks than do well governed firms. I build a simple model where managers are prone to over-invest and where shareholders are more willing to tolerate such a behavior in good times. The model successfully explains...

Aggregate stock prices, relative to virtually any indicator of fundamental value, soared to unprecedented levels in the 1990s. Even today, after the market declines since 2000, they remain well above historical norms. Why? We consider one particular explanation: a fall in macroeconomic risk, or...

We examine the effects of changes of government provided old age pensions on fertility choices in the context of two models of fertility, the one by Barro and Becker (1989), and the one inpired by Caldwell and developed by Boldrin and Jones (2002). In the Barro and Becker model parents have...

The employment rate of women is twice as high in Anglo-Saxon and Scandinavian countries compared to Mediterranean ones while this gap is close to zero for men. This phenomenon is generally explained by institutions such as labor market and family policies. In this paper it is argued that the...