Economists traditionally tackle normative problems by computing optimal policy, ie the one that maximizes a social welfare function. In practice, however, a succession of marginal changes to a limited number of policy instruments are implemented, until no further improvement is feasible. I call...

Do locational fundamentals such as coastlines and rivers determine town locations, or can historical events trap towns in unfavorable locations for centuries? We examine the effects on town locations of the collapse of the Western Roman Empire, which temporarily ended urbanization in Britain,...

In several interesting markets, demand is an increasing function of past sales because of learning, network externalities or fashion. This paper examines entry into such markets. The two key elements of the model are that firms are uncertain about the demand (and learn in a Bayesian fashion) and...

This paper studies the impact of income inequality on fiscal conservatism when an increase in inequality affects the bottom portion of income distribution. It is argued that, contrary to what is generally assumed in the economic literature, inequality will then be associated with less, rather...

This paper describes the gender distribution of research fields chosen by the faculty members in the top 50 Economics departments, according to the rankings available on the Econphd.net website. We document that women are unevenly distributed across fields and test some behavioural implications...

We consider a dynamic model of price regulation with asymmetric information where strategic delegation is available to the regulator. Firms can sink non- contractible, cost-reducing investment but regulators cannot commit to future price levels. We fully characterize the Perfect Bayesian...

A code is a technical language that members of an organization learn in order to communicate among themselves and with members of other organizations. What are the features of an optimal code and how does it interact with the characteristics of the organization? This Paper develops a simple...

We consider an endogenous growth model in which appropriate organization fosters innovation, but because of contractibility problems, this benefit cannot be internalized. The organizational design element we focus on is the division of labour, which as Adam Smith argued, facilitates invention by...

What determines how integrated a firm is? We emphasize the benefits of "control" when there are difficulties in writing complete contracts. We define the firm as being composed of its assets. We present a theory of costly contracts which emphasizes that contractual rights can be of two types:...

Transactions take place in the firm rather than in the market because the firm offers agents who make specific investments power. Past literature emphasizes the allocation of ownership as the primary mechanism by which the firm does this. Within the contractibility assumptions of this...