This note lays out the basic Susceptible-Infected-Recovered (SIR) epidemiological model of contagion, with a target audience of economists who want a framework for understanding the effects of social distancing and containment policies on the evolution of contagion and interactions with the...

The main objective of the study is descriptive. We set out to explore the (cor)relations between five IT and R&D indicators and measures of labor and total factor productivity, average wage and skill composition, on four panel data samples of French manufacturing and services firms over the two...

This paper measures and compares the relative earnings of French and English speakers in Canada, and of Spanish and English speakers in the U.S., in the 1970s and 1980s. In Canada, the earnings gap between French and English speakers narrowed over time, especially in Quebec. This decline appears...

We estimate peer effects for fourth graders in six European countries. The identification relies on variation across classes within schools. We argue that classes within primary schools are formed roughly randomly with respect to family background. Similar to previous studies, we find sizeable...

This paper introduces dynamics in the R&D-to-innovation and innovation-to-productivity relationships, which have mostly been estimated on cross-sectional data. It considers four nonlinear dynamic simultaneous equations models that include individual effects and idiosyncratic errors correlated...