Showrooming, the phenomenon of consumers visiting a brick-and-mortar (B&M) store to learn about products but then buying online to obtain lower prices, is attracting increased attention both in business practice and in academic literature. It is considered a major threat to the B&M retailers,...

This paper examines the evolution of drug use in Colombia over the past years. Our analysis, based on surveys from the Dirección Nacional de Estupefacientes, shows that drug consumption grew substantially between 1996 and 2013. The growth occurred for both genders, all ages, socioeconomic...

The first paper is co-authored with Sylvain Delalay. We examine the impact of competition between ETFs on measures of market quality of the funds. The surge in new ETF creation has for consequence that groups of competing ETFs are increasingly crowded, and investors can choose from a multitude...