Using an exhaustive database on academic publications in mathematics, we study the patterns of productivity by world mathematicians over the period 1984-2006. We uncover some surprising facts, such as the absence of age related decline in productivity and the relative symmetry of international...

Using an exhaustive database on academic publications in mathematics, we study the patterns of productivity by world mathematicians over the period 1984-2006. We uncover some surprising facts, such as the absence of age related decline in productivity and the relative symmetry of international...

Food purchases differ substantially across countries. We use detailed household level data from the US, France and the UK to (i) document these differences; (ii) esti- mate a demand system for food and nutrients, and (iii) simulate counterfactual choices if households faced prices and...

This paper studies spousal peer effects on the smoking behaviour and their implication for the health of children through passive smoking. Smoking decisions are modeled as equilibrium strategies of an incomplete information game within the couple. Using data from the French Health Survey...

This paper quantifies the relationship between market size and innovation in the pharmaceutical industry using improved, and newer, methods and data. We find positive significant elasticities of innovation to expected market size with a point estimate under our preferred specification of 0.23....

In this paper we study the effects of the change in contract length on the agents' incentives to invest and exert effort. We present an agent's dynamic decision model that explicitly deals with two types of investments and directly allows for contract regime switching by varying the probability...

Using data on individual consumption from farm households in the Philippines, we construct a direct test of risk-sharing within the household. We contrast the efficient outcomes predicted by the unitary household model with the outcomes we might expect if food consumption delivers not only...

We show how to use a long period of observation of all food purchases at the household level to infer the profile of average individual caloric intakes according to the gender, age and the body mass index of household members. Using data from France, we apply this method to analyze the...