The paper studies the impact of homophily on the optimal strategies of a monopolist, whose marketing campaign of new product relies on a word of mouth communication. Homophily is a tendency of people to interact more with those who are similar to them. In the model there are two types of...

In this article, we look at the combination of several market-based climate and energy policies and compare them with first best solution, i.e., a perfectly designed emission tax or emission cap level. It is shown that in the case an emission control policy is imperfect designed or implemented,...

The analysis in Galperti and Strulovici (2017) relies on two axioms that appear normatively and descriptively very appealing. Notably, these two axioms, taken together with some standard axioms, imply a failure of dynamic consistency. The current comment argues that the two axioms are less...

Inequity plays a fundamental role in the evaluation of social welfare in many dimensions.We revisit the concept of inequity, whether across states of world (uncertainty), across individuals (inequality) and across generations (intergenerational equity), using a common framework generalizing the...

The choices of a dynamically inconsistent individual depend on whether she commits to consumption ahead of time or chooses consumption in the moment. In individual-choice settings, it is normatively ambiguous whether such an individual’s choices with commitment or in the moment are "better"....

We propose the use of a three-level random intercept model to measure the degree of environmental policy performance of different countries and to study its determinants. Inspired by the literature on multilevel latent models and Item Response Theory (IRT), this framework treats policy...

Vulnerability to scarcity or to reduction of natural capital depends on defensive substitution possibilities that, in turn, are affected by the availability of other productive factors. However, in several developing countries asset distribution tends to be highly skewed. Taking into ac- count...