This paper uses a provocation model to explain why the initial Muslim coalitions against southern Christians broke up in Sudan and Chad. The need to cooperate was made obvious in Sudan when oil flew in a Chinese-built pipeline running through the Christian rebels’ homeland. Jihad was called...

In this paper, we investigate the use of interactive effect or linear factor models in regional policy evaluation. We contrast treatment effect estimates obtained by Bai (2009)'s least squares method with the popular difference in difference estimates as well as with estimates obtained using...

We study exchanges between three overlapping generations with non-dynastic altruism. The middleaged choose informal care provided to their parents and education expenditures for their children. The young enjoy their education, while the old may leave a bequest to their children. Within each...

We show that the celebrated Atkinson and Stiglitz (1976) result on the uniformity of the commodity tax rates when preferences are weakly separable between goods and leisure does not hold when (at least) one of the goods is produced within the household. The result is restored if preferences are...

We examine the optimal time-variant refuge policy to manage pest resistance to Bt crops in afinite-horizon discrete-time model. We identify analytically the intertemporal effects of refuge fields on the pest population and its susceptibility. The shape of the optimal refuge policy and whether or...

We show that every (random) assignment/allocation without transfers can be considered as a market outcome with personalized prices and an equal income. One can thus evaluate an assignment by investigating the prices and the induced opportunity sets. When prices are proportional across agents,...

The paper develops a framework combining a model of rational behaviour under dietary constraints, an epidemiological model of diet-related mortality, and a life-cycle-analysis model of environmental impact, which permits the ex-ante assessment of dietary recommendations in multiple...

The broad aim of this paper is to gain some insight into the quantitative importance of reputation in e-commerce. We use an exhaustive data set from one of France’s largest e-commerce platforms, <a href="http://www.priceminister.com/">PriceMinister.com </a>, to estimate a statistical causal effect of a seller’s reputation (and size)...

This paper discusses the feasibility and performances of simple mechanisms to implement international environmental agreements in the multilateral externalities context of global warming. Asymmetric information and voluntary participation by sovereign and heterogenous countries are key...