This paper models a two-period overlapping generations economy in the steady state where the realization of the quantity/quality number of children depends on an initial investment in children and on a random shock. It shows that the implementation of the first-best allocation, in which the...

This paper considers a dynamic North South model of international trade and innovations in which firms can endogenously bias the direction of technological change. We show that, when there is a differential degree of protection of property rights between the two regions, innovating firms face a...

We analyze an oligopoly model in which differentiated criminal organizations globally compete on criminal activities and engage in local corruption to avoid punishment. When law enforcers are sufficiently well-paid, difficult to bribe and corruption detection highly probable, we show that...

The paper considers a model with two goods: a private good and an "environmental" good. The analysis has two basic ingredients : the two goods are imperfectly substitutable and the long run characteristics of substitution are uncertain. An ecological discount rate is defined. It is argued that a...